I did a post-bac at Wayne. They told me to do the whole 20 credit thing and get a 3.5 or higher and at least a 30 on the MCAT. I did 25 credits, all science classes, 4.0. 32 MCAT. But I'm still on the waitlist. I think they are pretty promising about weighing your post-bac GPA heavier. I'd disagree with a previous poster about Post-Bac programs not having that much clout. It obviously depends what program you go to. A post-bac at Wayne won't carry you very far outside of the state, let alone outside of Detroit. But if you get into a reputable program, the post-bac will definitely help. Especially if you have been out of school for a while. As he said, ofcourse, the MCAT is the great equalizer.
Whatever program he/she was doing where most of the classes are more difficult than a difficult science course at Michigan.. he/she should have no problem getting into a medical school. I'm sure many of us have gone to/still are at U of M. I can't imagine too many courses out there being more difficult than Orgo 2 or genetics at U of M. These courses aren't impossible, but from what I've been told, if you can get an A in those classes, you can get an A in most - if not all- medical school classes. Anything more difficult than those courses, and its probably at a top 20 program/ivy league and getting into a medical school shouldn't be a problem.