I believe in passer rating differential as a predictor of success and championships. It's not perfect and it won't predict every game, but here were the regular season passer rating differentials for all the playoff teams:
GB +42.1
NO +24.1
HOU +23.7
NE +19.6
PIT +18.0
SF +17.8
DET +15.1
BAL +12.9
ATL +7.8
NYG +6.8
CIN -5.4
DEN -19.6
The Houston-Cincinnati outcome was a lot less questionable than people thought. It's no coincidence that the game came out with Houston (Yates) having a 98 passer rating and Cincinnati (Dalton) a passer rating in the 50's. That differential itself is a killer. If the Texans can achieve the same thing against the Ravens, who finished with a +12.9 rating differential in 2011, then you're staring at a Houston team that could easily end up in the AFC Championship Game. Joe Flacco will be vulnerable to that Houston defense. We'll see. I predict Baltimore victory, but I also think Baltimore will go to the Super Bowl so it's no real shame to lose to them. But the Packers will still win the Super Bowl, preserving passer rating differential as still the best predictor of championships.
Also the Packers were like 10-0 against teams that finished with 8-8 records or better.