Media absolutely plays a role in this. It's hard to argue that. Aside from OU beating a complacent bammer team this January, what has what's left of the Big12 done? They have 1 National Title ('05 Texas) since 1985. Why isn't Texas getting savaged in the media for their awful fall? They have gone from the powerhouse program in a football crazy state with the alumni support, network, etc., to the 3rd (behind aTm/Baylor) or even arguably 4th (behind TT or TCU) best program in their own state? And it's looking like Charlie Skrong might have a ground up rebuild on his hands.
The SEC is the penthouse, and will remain so because their programs are almost all situated in recruiting hotbeds, and many of them seem to operate by their own recruiting rules (oversigning, anyone?). The PAC-12 will remain strong as long as Oregon can sell Nike. After that? Well, USC seems to be heading back in the right direction. Stanford Football™ suffered a setback this week. Is this the start of their slide back to mediocrity? Is Shaw for real, or has he benefitted from what Harbaugh built and is now regressing as his own touches on the program take over. UW hasn't been relevent since the early 90's, the Arizona programs are consistently up and down. UCLA seems to be on an uptick, but we're still waiting on their first BCS appearance since the 90s.
The ACC has been the cremepuff (LOL!!!1!!11!) for years until FSU finally awoke on the shoulders of an (alleged) felon. After that? VT is coming off two bad years after a mostly solid decade that included many big game failures. Miami is on life support. Lousiville and Pitt are Big East refugees who have never proven they can win on the big stage. Clemson just woke up from 2 decades of mediocrity, and may see a significant dropoff post Tajh-Watson.
In short, I think it's the SEC and everybody else jockying for 2nd place. And I think that will be the case for the forseeable future. The B1G is going to struggle to climb to second until scUM and PSU get their act together. tOSU-scUM-Ped Aggy are the Big Three. Wiscy and Nebraska are after that. Iowa is good for a decent season every now and then. After that, it's pretty much bottom feeders hoping to get a late-december bowl game.