Football is funny because a lot of times you win when it seems like you shouldn't and lose when it seems like you should win..
It's true for a lot of teams, even Brady. Losses 2 SB to the Giants but beats the Rams by scoring 10 points or whatever it was.
The key is being in the final 2-4 teams in the conference a bunch of times so you have a bunch of shots at it. When you're good eventually you'll break through.