Combination bot a few things, I believe. With Buffalo coming off the division championship we face a tougher schedule (in theory on paper for the moment) than the Jets and Fins.
Both teams grabbed a few big names and look to be tougher and on the rise. 10-7 is plausible. So is 13-4. Another AFCE title is plausible. So is being a Wild Card. Long season and lots can happen.