One thing everyone likes about NFL football is the parity in the league and the fact that the playoffs are one-and-done (one loss and you can't win the championship).
Look at how things have played out recently in the AFC. In week 1 the Ravens beat the Jets and the Patriots beat the Bengals. Then the Bengals beat the Ravens and the Jets beat the Patriots. In other words, you'd we have Ravens > Jets and Patriots > Bengals, and Jets > Patriots and Bengals > Ravens thus Jets > Patriots > Bengals > Ravens = Jets > Ravens and so on. The fact that a team won in week 1 doesn't say much about who will win in week 2.
A lot is at stake on any given Sunday.