Chiefs have 2 games that could easily be losses (Colts, Broncos), and the Chargers, who ebb and flow with their O-line
Jags have 3 games that could easily be losses (Colts twice, Broncos)
Ravens have 4 games that could easily be losses (Steelers twice, Patriots, Packers)
Chargers have 3 games that could easily be losses (Eagles, Chiefs, Broncos)
For each team, the other competition is with teams that they shouldn't lose to unless they crap the bed. So the Chiefs still have a hill to climb just to get into the playoffs.