If you look at the 2012 Super Bowl lines, the NFC has been a heavy favorite with the dominance of the Green Bay Packers this season. With Aaron Rodgers having an amazing season, the Packers had all the momentum as they were plowing towards a potential undefeated season.

This weekend they hit a pretty big speed bump in the form of interim head coach Romeo Crennel and the Kansas City Chiefs. The Chiefs have had a miserable season, starting the year with high expectations following a successful 2010 campaign. Ravaged by injuries and squabbles between the head coach and the GM, the Chiefs have been a mess all season.

But they have talent on defense, and now they have a solid quarterback in Kyle Orton to ride out the season, and Green Bay found out how difficult it is to go undefeated in the NFL.

But was this just a speed bump, or did the Chiefs expose some problems with the Packers? Aaron Rodgers is a stud and all the pundits were crowning him the king of quarterbacks even while others like Tom Brady and Drew Brees were also carving up defenses with the new rules. But Green Bay now has a problem on the offensive line with backup tackle Derek Sherrod breaking his leg and starter Bryan Bulaga getting an MRI today for a sprained knee. Aaron Rodgers may be great, but he’ll come back down to Earth if other teams can get pressure on him with four lineman like the Chiefs did yesterday. Just ask Tom Brady about his last Super Bowl appearance.

Speaking of Brady, he gave a lesson to young Tim Tebow yesterday as the Patriots spanked the upstart Broncos. The Patriots and Steelers look like the class of the AFC after the Houston Texans and the Baltimore Colts failed to show up yesterday, but the Steelers have a tough road game tonight in San Francisco with Ben Roethlisberger trying to play on a gimpy ankle.

Back to the NFC, Drew Brees put on a show yesterday. For all the talk about Aaron Rodgers this season, Brees is poised to break Dan Marino’s record for most passing yards in a season. We also have two rookies this season with over 3,000 yards, so anyone trying to tell you Aaron Rodgers is having the best season for a QB in NFL history needs to put this in context. By holding back hits on receivers and quarterbacks, the NFL has turned this into something resembling arena football. Stats are inflated.

That said, it’s still shaping up to be a Green Bay/New Orleans shootout on the NFC side. Should be fun to watch.