The sort of students that might be attracted to attend an sec school, or discount a B1G school based on relative football prowess is the type I doubt many B1G Presidents are losing sleep over.
You may want to reign that in a little. Since Saban's hiring in 2007, Bama has seen their undergraduate program increase by 33% - and seen the academic qualities of those students rise. A large percent of these new students are coming from out of state as well. From Forbes:
Since 2007, Tuscaloosa has swelled its undergraduate ranks by 33% to over 28,000 students ... But it’s more than growth – it’s where the growth is coming from. According to the school, less than a third of the 2007 freshman class of 4,538 students hailed from out of state. By the fall of 2012, more than half (52%) of a freshman class of 6,397 students did.
For the admissions office, more applications mean more selectivity. Six years ago, 64% of students applying to the University of Alabama were accepted. By 2012, the acceptance rate had dropped to 53%. About one in four students from the 2012 freshman class carried a 4.0 high school GPA. The class also includes 241 National Merit Scholars, more than any other public university in the U.S.
BTW, the 241 scholars also puts Bama at 4th of all schools - behind only Harvard, U of Chicago, and Southern California.