Some years, it feels like the best teams in football are flawless. This isn't one of those years.
Most people had the 49ers as the class of the NFL, but they were stomped by the Ravens at home two weeks ago. The Eagles can't even beat the Cardinals. The defending Super Bowl champion Chiefs lost three of four games in December. And while the Ravens are unquestionably a great team, they lost to the Colts and Steelers earlier this season and have the sort of recent playoff track record that will leave people skeptical until proven otherwise.