Pretend you are a top rated QB comin out of high school, which College team gives you the best exposure and chance to win a NC. What college would you choose for yourself? I would go to USC.
Add Florida, FSU, Miami, Oklahoma, Michigan, Georgia, Auburn, LSU,and Ohio St to that list, and you probably have all of the bases covered. For a top notch quarterback given the criteria stated above, the list is relatively narrow.