In the offseason, both the Bills and the Pats were slated for 9 wins. And it was thought that one team would end up 9-7 and one 8-8, with whoever managed to go 9-7 taking the division.
Then the Pats signed Cam, and Josh came into his own. I still think it will be a 1 game difference for the division, but probably more like who ends up 10-6 vs 9-7.