Philly could lose to Green Bay and St. Louis, just because the game is in St. Louis and the Rams can outscore anyone on any given day. They have had the benefit of playing a very easy schedule in the weak weak NFC East. Most likely they lose one more game though and finish 14-2 and have homefield throughout. It's hard to say in the NFC.
I like the Pats as well, but I don't think the Steelers will make it. They don't have an offense to keep up with a team such as Indy if they were to meet. I like Indy and NE again, depending on how the bracket sets itself up. I really like Indy this year, as bad as their defense has been it has played pretty good in recent weeks. And we all know about the offense. Unstoppable.