Patriots seem to be in the process of imploding. Colts are cursed as long as Manning and Dungy are there. Broncos still have Plummer at QB. Chiefs hired Herman Edwards. San Diego is letting Philip "WHEEEEEEEEE" Rivers throw what could have been the next Super Bowl winner completely away. Dolphins have a turnover machine at QB now. Baltimore still has Billick's huge ego holding it down as well as the inevitable Steve McNair injury where the team goes 0-4 in his abscence because Kyle Boller throws worse than Aron Ralston. And Cincinnati has to deal with thugs galore.
Now, all Pittsburgh really lost was Bettis and ARE, and they are still ahead of the rest of the AFC. Pittsburgh has a very good shot at repeating, but this could definitely be a WTF year. I can see Houston, Jacksonville, or maybe even Cleveland coming together to make a deep playoff run.