I agree with you. SEC does have the largest share of BCS bottom-dwellers. Ole Miss, Miss State and Vanderbilt are all currently like that. Kentucky is actually a .500-quality program right now, but we'll see how that lasts.
Still, the SEC has...
Florida - Probably the second most prominent football program in the US besides USC
LSU - Consistently the most talented football team in the US, even though they don't have the record to prove it
Georgia - Always talented and in the discussion for the SEC championship
Tennessee and Auburn are almost at that level. Tubberville needs to be a little more consistent with his talent. Tennessee is a good coaching staff away (READ: I DO NOT MEAN FIRE FULMER) from reaching the top of the conference.
On the way down: Arkansas' problems with Mustain and CHN are going to set them back... I don't see Kentucky getting any better. They will plateau at best, if not slide back down to being Kentucky.
Then the bottom dwellers.
Point being: Even though I believe the Pac to be the second-best conference, the SEC has 5 teams that would consistently finish 2nd in the Pac-10. Alabama and South Carolina would be top-half teams, too.
So while the SEC does have more dogs**t programs than any other BCS conference, it has too much talent at the top to ignore.