OU hasn't seen a defense anywhere close to what UF will bring to Miami. Top 5 vs top 50. Texas was the best D that OU faced all year - ranked 50 in total D, 59 in pass efficiency D, 18 is scoring D, 2 in rush D. Florida is better in every category by a mile except rush D.
OU's defense however will have a bitch of a time stopping UF - especially with a healthy Percy Harvin. You can pretty much guarantee 45 points for the Gators.
Don't have the stats in front of me, but I bet that TCU and Cincinnati both rate very well in defensive statistical categories, though their competition could be called into question a little, but the SEC hasn't exactly been an offensive juggernaut this year either.