Keep in mind that the Big 12 figure is only for their secondary TV rights - the primary deal is with ABC/ESPN and ups their take considerably.
And was there any doubt that the BEast was a better home than C-USA? C-USA has this going for them, though - with the MWC taking three near-fatal blows over the last year, they may now be the leading non-AQ conference. Sure, the MWC has Boise, but after that? Stronger programs in better markets in C-USA.