As we all know Tom Bradys winning percentage is significantly better than Peyton Mannings. But, did you know? Manning career w/l including playoffs is 140-71 (.664) In other words against average competition Manning wins 66.4% of his games. Bradys career w/l is 112-34 (.767) which means Brady wins 76.7% of his games against avg competition, but head to head with Manning he is 8-4 (.667) Tom Brady has a better winning percentage against Peyton Manning than Peyton Manning has against the average of the NFL. And there is still a debate?