Cinci defense is terrible. They are one dimensional on offense. They may have best passing game in the league, but still they have little to no run game.
It's Baltimore and the Chargers to get past. Both teams are physical and that gives Bills trouble.
No one in the AFC South is in the league of these four teams. However if Jags or Texans suck, the other team may run away with the division and home field advantage.