NCAA Football 12 basically has two team ratings: one decides how players play in online games and the first seasons of dynasties, and the other decides how teams perform in future dynasty years. A good overall rating can't be sustained without a good prestige rating, which affects the level of coach and recruit a team can draw over time.
As expected, the Alabama Crimson Tide, Florida Gators and LSU Tigers all have maxed-out six-star prestige ratings, along with defending national champ Auburn. The Georgia Bulldogs are just a step behind despite finishing 6-7 last year, meaning they're a big season or two away from joining the upper tier -- while another collapse away from slipping to join Tennessee.
There are a couple other conferences that look a little off, but I think they got the current SEC pecking order right, though I could see Arkansas being rated anywhere from three to five stars.
Here's a complete list of team ratings and rankings, and here's how the SEC stacks up: