What I'm learning is that the QB's mobility has been a terribly underrated aspect of these exercises. Thinking back to the last 10 Super Bowls, nearly all of them were won by a QB with at least SOME mobility. And in the case of Eli Manning, they ONLY won because of his mobility.
Brady 3x, Roethlisberger 2x, Eli, Brees, this year (Ben, Sanchez, Rodgers, Cutler are all very mobile)
Peyton wasn't very mobile, and he had a terrible Super Bowl but was fortunate in that he was playing someone who may be even less mobile in Rex Grossman. Brad Johnson also wasn't mobile, but (and I know this sounds like a cop-out) his defense was ridiculous and it didn't matter who was at the helm that day. Sort of like Dilfer in 2000.
The reason I bring it up is because I've been thinking about what makes a QB "great". In my mind, all season long I watched Philip Rivers believing that I was watching the best QB in football. And there's certainly some truth to that, because he's extremely proficient and does a ton without a ton of weapons. But the more I thought about it, the more I thought that in the postseason, he's not all that great at avoiding an opponent's oncoming pass rush. And in the playoffs, defenses are typically a lot better. And when a pass rush gets to you, mistakes are magnified. It's not a knock on the player, but there has to be some explanation for why Manning, Rivers, and Marino have combined for one less Super Bowl win than Ben Roethlisberger. I know the team around them has a lot to do with it, but I really think there's something to be said for escapability more than simply throwing ability and intelligence.
Now I'm not suggesting a guy like Vick would be ideal, because his is just about having great moves and balance. I think you get a pocket passer who can avoid a costly sack, fumble, INT and you've got yourself a guy who can win a Super Bowl. Not saying Rivers can't or never will do it, but he's been at the helm of some pretty awesome teams. Yet his 3-4 career playoff record, 58% completion percentage, and 8:9 touchdown to interception ratio certainly leave a lot to be desired.
I voted Rodgers, and would have done the same if this question had been posed before the Patriots game. Brady had a great statistical season and has terrific accuracy, but considering he's beyond his prime as far as avoiding the rush and the question is asking about the next 3 years going forward, I think Rodgers is the easy choice.