SEC supremacy talk will be alive and well on DWF message boards after another SEC team has won the BCS championship.
My take on this is that the SEC has more success getting the best stud QBs and o-lineman, but other positions are close to equal. There is probably a small gap between black talent in the Big 12, Big 10 or Pac-10 compared to the SEC across the board. There is no doubt in my mind though that stud white RBs like Nile Knapp, Sam McGuffie, Rex Burkhead and Toby Gerhart would have similar success to the top black backs like Marc Ingram, Trent Richardson, Michael Dyer, Knile Davis and Jeff Demps (different roles for all these guys, depending on their skill set and measureables) if playing in the SEC with that kind of blocking.