It would be really, really funny if Arizona won it all. I don't see them beating Philadelphia and then Baltimore/Pittsburgh, but then no one had them beating Carolina either (though I did think they'd beat Atlanta). I kind of have to root for them.
Baltimore/Pittsburgh should be a brutal game and the winner will definitely be favored to win the Super Bowl. I think the Eagles, as they've been playing lately, could give either team a good game, though. I hope that it's a Pittsburgh vs. Arizona Super Bowl, though. So, so funny.