Propaganda: As good as the SEC has been at winning national championships, it wasn't that much better than everybody else during the BCS era. From the start of the BCS era in 1998 to its end in 2013, SEC teams went .500 against Pac-12 teams during the regular season (13-13), were only slightly better than the Big Ten in bowl games (23-21) and had a losing record against Big 12 teams during the regular season (8-12).
In fact, the best thing to happen to the SEC during conference realignment might have been the dissolution of the Big East. During the BCS era, Big East teams went 20-17 against SEC teams in the regular season and 8-5 in bowl games. For whatever reason, Big East schools seemed to have the SEC's number more than anyone else.
Sure, SEC teams hoisted the most crystal football trophies during the BCS era, but are you really that dominant when you can't beat the mediocre Big East on a regular basis?
And if the SEC is really that good, how did Missouri win the SEC East in its second season in the league? The Tigers were an above-average team in the Big 12, but few people expected them to contend in the SEC so quickly.
Four teams largely carried the SEC's flag during its recent dominance: Alabama, Auburn, LSU and Florida. Under coach Steve Spurrier, South Carolina has been better than it ever was, but the Gamecocks still haven't won an SEC championship. Florida and Tennessee have been sinking ships, and Georgia can't seem to get over the hump.
The SEC's best teams might be great every season, but its overall record against the other Power Five conferences suggests it might not be as dominant as we believed.