I think there are X and O coaches and GM coaches, like there are pro and duel threat QBs. He's clearly the best GM type coach ever, and above average X and O. So is Brady really the best QB ever? Put it this way, if it's Elway or Favre or Montana don't they do just as well? Or Marino? On the other hand, what coach could you insert with Brady and get the same result? Arguably none.