Nobody cares about the "playing for the best team" stats. Who actually looks up post season stats? I've never heard anyone talk about post season passing yards.
ETA: The point of the last part was to show the efficiency of those stats. You aren't wrong, they were up more than the Saints. But the luxury of being up by a lot lends itself to extra efficiency, especially when you are specifically padding stats. Comparing the split stats from Peyton's 49 PTD season to Brady's 50 PTD is laughable. Worst case of stat padding in the history of the sport. FBG doesn't go back that far anymore, but I think Brady had 22 PTD while leading big compared to Peyton's 4 or 6 PTD while leading big. Can't remember offhand.
In the regular season, Brady has played 92.1% of the time outdoors and 7.9% indoors over the course of his career. Brees has played outside 49.4% of the time and indoors 50.6% of the time.
Here are the actual regular season totals for both players to date:
BREES:
6222 completions, 9292 attempts, 66.9% completion, 96.7% QB rating, 7.6 YPA, 70445 passing yards, 488 TD, 228 INT.
BRADY:
5129 completions, 8805 attempts, 63.9 completion%, 97.6% rating, 66159 passing yards, 488 TD, 160 INT.
BUT . . . if we used real performance levels for indoors and outdoors and had both players play the % of indoor/outdoor of the other QB, here would be the recalibrated numbers.
BREES:
5860 completions, 8983 attempts, 65.2% completion, 92.3 QB rating,7.2 YPA, 64850 passing yards, 431 TD, 220 INT.
BRADY:
5680 completions, 8383 attempts, 67.8% completion, 103.6 QB rating, 8.0 YPA, 67397 passing yards, 514 TD, 179 INT
Brees would lose almost 6000 passing yards and 55+ TDs had he played at the same level outdoors if he had to do so as much as Brady did.
Brady would have been more efficient playing indoors as much as Brees did and would have gained 1000+ passing yards and 25+ TDs.
Brees had a HUGE advantage getting to play in a dome and it's not judge a marginal thing to be dismissed when looking at his career numbers. And to reiterate, he's still an all time great QB (and I am not pimping Brady as super human here, only that he was the one guy that was mentioned).