Brady, Brees and Peyton Manning have all won a number of playoff games and SB's. They've all gotten over the hump and reached the pinnacle and Romo has yet to. They have a number of skins on the wall and will all be first ballot Hall of Famers 5 years after they retire. When you've accomplished what they have they're going to get a pass on some bad games and some bad throws.
Peyton was the classic choke artist...until he wasn't....and then eve things afterwards (like the int vs. the Saints and his int in the Ravens game get ignored).
People forget that Brady played with top 5 defenses (and was cheating) during all of his championships.
People forget that nobody throws more picks than Drew and he was considered a big stats no wins guy until just a few seasons ago.
If you want to crown them then crown them.....but please try to have some perspective.
As an aside I think Peyton is the greatest QB to ever play the game.