History shows that Super Bowl champions tend not to repeat, whether their starters return or not, and many follow their big wins with mediocre seasons. Whether it's because of complacency, egos, distractions or just bad luck, it's hard to say. But it's clear these Ravens still have something to prove to the world. Even Joe Flacco, that Super Bowl MVP who threw 11 touchdowns with no interceptions in the playoffs, was dissed in a recent ranking of top NFL quarterbacks on NFL.com, which listed him 13th. Matt Ryan and Cam Newton were rated higher.