01-03: The "Big 3" are still in the conference, DR goes 20-17 overall and 13-8 in the conference.
04: Miami and VT leave, DR goes 8-4, 4-2 and loses to non-conference VT.
05-07: wvu is now clearly the giant in a conference of dwarves. This is also when DR gets his star players White and Slaton. They go 32-5, 17-4. They still lose to VT in '05. In this time, they lose both games to the only conference foe with a legit defense (USF) and are on the wrong end of a monumental choke job against his chief rival (sound familiar? *cough*Cooper*cough*).
Even with possibly the most perfect duo you could hope for his offense in White/Slaton and a pathetic conference, he still loses 2 games in that conference in both '06 and '07. Go watch some wvu games from those years. I watched several because they were on TV a lot and that offense was fun to watch. The man is not a good gameplanner, refuses or is unable to adapt under duress, and is very easily outcoached. All you have to do is smack that offense in the mouth and DR poops his pants. The Big-Ten is full of defenses that are more than capable of doing that. He'll beat up on the dregs of the conference, but I assure you, he will lose to the like of tOSU, PSU and Wiscy at least as much as, if not more than he wins.
I know that many will say that he'll get better athletes at um than he got at wvu, but the opposition will have better athletes than he faced in the Big East. And I'm not sold that he actually will recruit that much better. He hasn't thus far despite being a name coach at a premier university. His system is not NFL friendly and most top recruits may very well notice that.