Take the Chargers down a few notches (undefeated, really? That's the worst prediction I've seen in a while), bump the Chiefs up to either tied or fricken close to tied. The Chiefs are picking up some great O-linemen and probably a fullback, along with some of the best blocking tight ends in the league, that will make them tied for deadliest running game in the league along with the Browns and the Vikes. They've also got a solid passing game with Tony Moeaki, Dexter McCluster, Dwayne Bowe, and Mat Cassell isn't the crappiest QB ever, either. Also, if they pick up a nose tackle like they want to, and a MLB, they could become one of the best all around teams in the league, as their defensive backs are good, too. The Chargers are pretty good, but I wouldn't put them too far ahead.
Also, bump the Browns up some. They're a hell of a lot better than the Bengals, and the Ravens vs. Browns games are actually pretty even. Also, they're probably picking up A.J. Green to improve their passing game. Also, if they pick up a behemoth at defensive tackle to replace Shaun Rogers, they won't be half bad. I'm not saying they'll win their division by any means, but they might do ok. Also what are you doing putting the Steelers at the bottom! Man, I don't like them either, but they'll do better than the Bengals!