I think you have to look at more than who wins the championship. We were able to predict all 6 division winners prior to the season. And next season we will be able to predict again, outside of the AL east. There is nothing close to this in the NFL.
On the other hand prior to last season you could predict the actual matchup in the championship round in the NBA. That is lack of parity.
Would you be willing to bet on anyone other than the patriots in the afc east?