[Charles Henrickson]

Otto Graham could be considered the greatest QB ever. He took his team to the championship game EVERY YEAR HE PLAYED. Still holds the record for the highest winning percentage of all time.

[FredZarguna]

I think all of these have to have the*.

*In the Superbowl era.

Brady would never have lasted in the era of Otto Graham. [or, for that matter the era of Bart Starr, whose career spanned both.]