If his comment was meant as a slight to the Big 10, then he would be mistaken. But there is some truth that the ACC is the more natural fit, even academically, for Notre Dame. They are not a part of that research consortium, and they don't offer as much in terms of grad school, Ph.D. level research that the Big 10 does. The ACC has fine academic schools that Notre Dame better fits with, and although ND may have a lot of money, they don't have the money that the big midwestern land grant universities do.