The main difference between Frost and RR is a matter of culture matching, not personnel. Both walked into bad situations. But only at Michigan was RR instantly disliked by the administration, boosters and press. That as much as anything wrote Rich's fate. It didn't determine the first year, but it did influence the things that came after: buy-in, recruiting, the "we stretched 20 too many minutes per week" scandal, and his accelerated firing. So I'd be wary of any comparison between them that extends after year 1.