That's overall. In the last 5 years the winner of the coin flip won 68% of the time, and 39% on the first possession. In the first 5 years after the system was implemented in 1974, the winner of the coin flip won the game 49.58% of the time, and the game was won on the first possession 27%.
Still, I don't think a team that has to defend first can use that as an excuse for losing. Defense is still a part of football, whether or not offense has opened up in recent years. You have to be able to play defense. If you don't do that and lose the game, you can't blame anyone but yourselves.
Why would you look all of that up?
Like I said....
Panthers for superbowl.