Well Manning and Brady's stats aren't in a vacuum sooooo it's not that cut and dry. That being said Nobody puts marino above montana(except the choice few fanboys) and nobody will put Manning above Brady (except for some fanboys), plain and simple. Manning got to 55, after Brady got to 50. He's also garbage in big games, and was garbage the entire superbowl run year. It's not just bad luck or circumstance, and it goes all the way back to his college years. Your disregarding that as a factor in terms of skill is hilarious, because Toms ability to recover has always been an amazing trait of his. It played huge in the ravens game, and it played even bigger last night.
So what is the defining measurement? Why do some declare Barry Sanders the GOAT, yet he has no SB wins?
Why isn't Terrell Davis in the HOF despite putting up the best postseason stats of any RB in the history of the game?
Clearly you base it all on a team wins in the postseason, where the majority of the time the more complete team wins.
As for stats, Manning is better overall than Tom. There really isn't an argument to be made there.
One can be a better QB and have less Superbowl wins. Just like Barry was amazing without the Superbowls.
I don't see why you can't accept one can be better at a position, but less successful championship wise in a team game. Superbowls arent the end all be all, otherwise TD would have a bust already.