I think there's about 8 or 9 AFC teams that have a legitimate chance of the Super Bowl, depending on how things come together and how healthy they are.
Between the Chiefs, Bengals, Bills, Ravens, Dolphins, Jets, Jags and Chargers (in that order probably) it could come down to little things like missed field goals and facing a back-up QB in Wk 12 to determine playoff seeding and home games. And in the post season, every single one of them might be capable of beating the others.
Even Cleveland could be in that group if Creepy starts playing like his old self - because the rest of their roster is loaded.
Of course, a couple of those teams will collapse spectacularly, but it's still a killer playoff schedule. It will be the luckiest team that comes through that gauntlet to make the Superbowl.