I second this. I was looking at the ncaa website and it seems that grabbing the stats from there would be trivial. I'm not sure if they have any kind of licensing terms for that data but I could find it while doing a quick look.
I was planning on playing with those stats to see if I could beat the BCS at rankings ;p
There's tons of variance in wins and losses, so any ratings system comparison should consider results over the long term.
If you're interested and have the statistical background, you should definitely give it a shot. For related ideas, check out Brian Burke's excellent Advanced NFL Stats blog: http://www.advancednflstats.com/