I'm only an "SEC fan" because of my sentimental attachment to some great Georgia teams back in the early 1980s, but there's no disputing the fact that the SEC has completely dominated the national title scene since the BCS was established. It seems like the only time a non-SEC team wins the national title is when the championship game matches two non-SEC teams.
Oddly enough, the SEC didn't have quite so many national champions from the 1980s through the mid-1990s when the process of selecting national champions actually favored independent teams that weren't locked into specific bowl games as conference champions. That's why Penn State, Miami and Notre Dame won a disproportionate number of national titles in that brief stretch.