The flaw in the Big 10/SEC dominance theory is that arguably the best conference over the last two years is the Big 12, and they are the least well-funded conference of all. Last year, the Big 12 had the NCAA winner (in dominant fashion) in Baylor, and they were the #2 rated conference overall. This year, the Big 12 is the #1 rated conference. FWIW, the ACC is down because they don't have a lot of marginal coaches (Capel, Pastner) coaches past their prime (Larranaga, Boeheim, Brey) or unproven coaches (Hubert, Keatts, Grant). The Big 12 just has a better roster of coaches right now (Beard, Drew, Self, Huggins).
Was looking at KP stats today, and something popped out in the "so predictable" category: in K's last season, Duke leads all 358 NCAA teams FTA per FGA. This essentially means that reffs are calling fouls against Duke's opponents at the highest rate in the country. Duke basketball always gets the benefit of the doubt on foul calls, but even that advantage is ramped up this year.