It's silly to act like there's no relationship between QB and WR. It's also silly to act like stats tell the whole story.
Larry Fitzgerald is arguably the most talented and hardest working receiver of his generation, but he may not make it into the HoF. When Kurt Warner was throwing to him, he was on another level, but when he had (name an Arizona QB) throwing to him, his numbers dipped further and further.
Reggie Wayne looked awesome with Manning, but then, he looks even better with Luck. That's not a case of a rookie QB being better than Peyton Manning, it's a case of the rookie QB leaning on his best veteran WR for the first half of last season, and Wayne responding well. We'll never know if Wayne would have emerged without Manning throwing to him, any more than we'll know if Manning would have put up the stats he did without a receiver of Wayne's caliber.
Wes Welker was on pace to become a good, but not special, WR. Then he joined the Patriots, and set NFL receptions records. In his first year in Denver, Manning's already raving about what a cerebral receiver he is, and how well he knows his stuff. Is that because he's a genius? Or because he had already played with an all time great QB?
What we can say, though, is that the Colts invested on offense from the moment they drafted Manning. They spent a first on Tarik Glenn, replaced Marshall Faulk with Edgerrin James, drafted Dallas Clark in the first to complement a more than capable Marcus Pollard, and after several failed attempts to find a top notch receiver to pair with Harrison, they drafted Wayne in the first, too. All those draft picks cost the Colts, as we'll see in a moment.
The Patriots, on the other hand, didn't invest on offense. In fact, in 2001, they didn't have much on offense or defense. They had a 5-11 team that had gone 0-2 to start the season, until Bledsoe got hurt, Brady took over, and suddenly they became a Superbowl team. This wasn't a particularly talented defense. They had Ty Law and Lawyer Milloy, a young Bruschi, and an old Willie McGinest, but they were a borderline top 5 defense with bare cupboards on offense. Troy Brown was by far their best receiver, and despite playing with Drew Bledsoe and Tom Brady for his whole career, he wasn't even remotely considered for the HoF. Tom Brady provided them with instant offense, though, and a bad team - a team that hadn't won a game without him - went on to win the Superbowl and beat the "greatest show on turf".
In 2002, the Patriots defense struggled mightily. They went on a three game losing steak early in the season, as three of the top running backs in the NFL gashed them for big games in back to back to back weeks. Brady responded by leading the entire NFL in touchdown passes, and brought a team with a mediocre defense and very little talent on offense to a 9-7 record, but missed out on the playoffs by a tiebreaker game that was decided after the Patriots' final game of the season.
Rather than investing heavily on offense, the Patriots drafted an unheralded tweener lineman named Richard Seymour over the consensus stud receiver they were "supposed to" take. Brady instead worked with Deion Branch, and led them to two Superbowls, winning a second MVP for himself, and earning Branch the MVP in the other. Brady started out a perfect 9-0 in the postseason, the best in NFL history, while also setting NFL records for consecutive regular season wins and consecutive regular + postseason wins. Branch was later traded for a first round pick to Seattle, where he proved that it was Brady who made Branch, and not the other way around.
During the time that the Patriots were winning these championships, Manning won an MVP award, throwing to Harrison, Clark and Wayne. He would then throw four interceptions in the playoffs against Tom Brady's Patriots, losing handily. The following year, Manning won another MVP award, this time setting the (then) NFL record for touchdown passes with 49. He again returned to Foxboro in the playoffs, and led his team to just three points.
The Patriots went back to the playoffs in 2005, but lost early. Manning led the Colts to the playoffs as well, but had an early exit against the Steelers, when he threw a game ending interceptions that was incorrectly (according to the NFL) overturned by the officials, took two game ending sacks, and then miraculously got the ball back after a rare Jerome Bettis fumble, only to screw up the final drive, leading the Colts to long field goal range and bombing away for the end zone instead of setting up a makeable kick. He would go on to blame his offensive line and kicker in post game press conferences.
The Patriots came back in 2006, but after trading away Branch, they were left with Reche Caldwell as the leading receiver in a group of misfits that had no right winning anything. Still, Brady carried the offense, and led the Patriots to the AFC championship game. But that was the one year that the Colts, who had overinvested on offense, fieldded a championship caliber defense was 2006, which dragged Manning kicking and screaming through a 3 TD, 7 INT playoff run and all the way to his first and only championship ring. Brady led the Patriots to a big lead early in the AFC championship game, but when the Patriots secondary was decimated by injury and illness in the second half, Manning was finally able to find some room to throw the football, and made his first Superbowl appearance and only win.
The following year, the Patriots finally tried to bring in receivers for Brady. They brought in a talented receiver named Randy Moss, who was coming off a 42/553/3 season in Oakland, and had averaged less than 800 yards and 8 TDs a season over the last three seasons. In his first year with Tom Brady, Moss caught 98 passes for 1493 yards and an NFL record 23 touchdowns. That was Brady's first year playing with anyone close to the talent Manning had enjoyed for his entire career, and it didn't take any time for them to warm up - the Patriots went 16-0 and set NFL records for points scored, passing TDs and receiving TDs. But Moss wasn't the only new receiver Brady had to adjust to. He also had to break in Wes Welker, coming off a 67 catch, 687 yard, 1 TD performance that was a career best at that point. In their first year together - on top of the huge performance by Moss -
Welker led the NFL in receptions with 112/1175/8, almost doubling his previous career best. The Patriots would go to the Superbowl, and held a lead with two minutes left in the fourth quarter, but as we all know, there was this catch, something involving a helmet, and I don't want to ####### talk about it.
But that was just their first year together. What would they do as an encore? Unfortunately, we'll never know, as Brady was hurt in his first season back and Matt Cassel took over. We know that Welker was pretty good - his numbers dipped, especially in touchdowns, but they were almost as good as they were with Brady. But Moss dipped substantially, dropping from 98/1493/23 to 69/1008/11 as the Patriots scored 179 fewer points, with 750 fewer yards, 5 fewer wins, and missed the playoffs. Matt Cassel would go on to have a credible NFL career, leading the Chiefs to the same record in 2010 as he did the Patriots in 2008.
When Brady returned, he was definitely off, but he still won comeback player of the year with a 4398/28/13 season. Manning's 4515/34/19 was a little better in yards, substantially better in touchdowns, and substantially worse in interceptions. The Patriots looked good headed into the playoffs, but then disaster struck, as Wes Welker got hurt by Bernard Pollard, and Brady was left with little in the way of targets and had a rare early exit in the playoffs. Manning led the Colts to the Superbowl, only to throw a game ending pick six.
2010 was one of Brady's finest. The team dumped Randy Moss early in the season, but Brady still threw 36 TDs against only 4 interceptions, and set the NFL record for consecutive passes without an interception, while leading the Patriots to a 14-2 record and an NFL MVP. But, as in Manning's MVP seasons, Brady went one and done in the playoffs, losing a one score game to a Jets team that the Patriots had swept in the regular season.
In 2011, Manning missed the entire season with a neck injury that threatened his career and ended his impressive ironman streak before he could get within striking distance of Brett Favre's. Meanwhile, the Patriots had totally retooled around second year tight ends Rob Gronkowski and Aaron Hernandez. Unlike his early years, where he had a slot receiver and mediocre outside guys, or 2007 and 2009, when he had a stud outside guy and a stud slot guy, he now had a slot guy and two tight ends, with no outside receivers. In this totally different offensive system, Brady started out the season by tieing an NFL record for longest touchdown pass, passed Dan Marino's NFL record for most yards in NFL history, and took the Patriots to their fifth Superbowl appearance, once again holding a lead with two minutes left in the fourth quarter, but losing to the same Giants team that had beaten them in 2007.
In 2012, Manning joined the Broncos, and won a comeback player of the year award of his own. Both quarterbacks played well - Manning with young stud receivers, and Brady with his young stud tight ends. The Patriots won their only regular season meeting. For the eighth time in twelve postseasons, Manning would lead his team to an opening round loss in the playoffs, throwing a game ending interception in overtime against the underdog Ravens. The Patriots won their opening round match against the Texans, but lost the following week against that same Ravens team, who went on to win the Superbowl.
In 2013, Manning has led the Broncos to an impressive 3-0 start. But Brady and the Patriots have an identical 3-0 record. And while Manning has enjoyed top notch receiving talent and a handpicked team, the Patriots lost Welker (to Denver), picked up Amendola, only to have him get hurt midway through their week one game, lost Hernandez on an unexpected murder charge, let Lloyd go, lost Gronkowski to multiple injury complications that still aren't cleared up, lost Shane Vereen for ten weeks on IR, and had to play a short week against an otherwise undefeated division rival in the rain on the road. Against all odds, the two teams have the same records, but everyone's talking up Manning, and talking down Brady, as though his play has suddenly deteriorated, and not the quality of the talent around him. It's silly.
The reality is that Manning has been the more successful fantasy football quarterback, but Brady has been more successful in NFL terms. Manning has the lead in regular season MVPs, but Brady has the lead in Superbowl MVPs, has more AFC Championship game appearances, a substantially better playoff record, and obviously, more rings. Moreover, Brady - not Manning - holds the NFL record for most touchdown passes, most passes without an interception, and is second all time in single season yards, all better than Manning. Both ahve helped their receivers set NFL records, but while Harrison set the receptions record, Welker set multiple receptions records, while Moss set the touchdown record for a receiver, and Gronk set the record for tight ends. Manning has accumulated better career totals, but Brady holds the edge in the single season marks and holds an enormous edge in postseason play, where he has an incredible 17-7 record, compared with Manning's 9-11 postseason record, and where Brady has five AFC Championships and three Superbowl rings, compared with Manning's 2 and 1, respectively.
Can Manning make a case for himself as being in the same class as Brady with a record setting season this year? Maybe. It depends how much or how little you value postseason play. It would take three straight Superbowl runs for Manning to pass Brady's postseason records, and Brady already holds most of the single season records for the regular season as well. But with the massive talent surrounding Manning, and the total dearth of talent around Brady right now, how impressive is it, really, for Manning to put up bigger regular season numbers? We've seen both quarterbacks do it, but what Brady's done, leading the Patriots to a perfect 3-0 record in the face of adversity I've never seen for any quarterback in all of my years as a fan, is arguably more impressive than what Manning's done with arguably the most receiving talent of any quarterback in the NFL. Manning can certainly make a case for himself, and there will probably always be some superfans who never give up on believing that he's on the same level as Brady, but it's obvious to the serious fan that Brady's been the better quarterback since he first took over the starting job.