The “greatest”? At what?
If we want to talk about the greatest contribution of a QB to his team...
Peyton Manning has the record of 43 4th quarter comeback wins.
That’s 26% more than Brady or Unitas, tied for 2nd at 34.
You know, 6 rings is great. But there is question of the quality of coaching/teammates.
That’s 6 rings with the same org.
Manning made 2 with 2 different teams. Kinda impressive. And after scary neck injury/surgery (was I scared for him; thank God he got through with no “incident”).
Comeback victories is nice but it's even more impressive for a QB to put his team in position to win more consistently (without having to come from behind all the time).