The three AFC West teams have some stud pass rushers: I'm sure KC and their fans hope that with that last game, Justin Houston is back 100% from injury, and can team with Tamba Hali to do some damage to opposing offenses...Denver with Von Miller (with Demarcus Ware), and Oakland with Khalil Mack. The three AFC West teams may be the biggest impediment to New England, and I'd have to give the edge to Oakland with their offensive firepower as the best chance to knock out New England.
The AFC South scares no one, and whoever the division champ is will most likely be one and done. In the AFC North, if the Steelers get in with Rothlisberger, Antonio Brown, and Leveon Bell, even though their defense is no where up to par, with that offense they will have a puncher's chance.
Don't count out the Ravens...Ravens have a push going and Flacco is decent when healthy and that defense is finally gelling, Harbaugh is still a hell of a coach and he brings that team together like Tomlin and the Steelers. So odds are on the Steelers, but Ravens could knock them out