Pittsburgh
Oakland
Cleveland
Detroit
Minnesota
San Diego
Kansas City
Jets
I see only 3 or 4 games that the Bengals could realistically lose. The 4th being against the Jets, but I see the Jets as being well removed from the playoff race by then and we all remember the effort they put forth against the Dolphins when their season was over. Awful.
Pittsburgh on the other hand:
Denver
Cincinnati
Kansas City
Baltimore
Oakland
Cleveland
Green Bay
Baltimore
Miami
I see 5 potential loses for Pittsburgh. Baltimore may very well be out of the playoff hunt by week 16 though, and Miami definitely will.
The Ravens remaining schedule:
Cleveland
Indy
Pittsburgh
Green Bay
Detroit
Chicago
Pittsburgh
Oakland
Another potential 5 loss schedule. It blows my mind but the Bengals could actually end up as the AFC North champions.