When he faces teams that are close to or equal talent he loses.
When you are ranked in the top 5, there aren't many teams of equal or higher talent. The number of games there is a small sample and will have large variance.
I do recall Harbaugh got a lot of flack for a while.
Yep -- for the same sort of reasons you list for Day. It was: can't beat Ohio State, can't beat teams of higher ranking, can't beat good teams in away games, lose too often to Michigan State.
I think it's better to look at it statistically and practically. I thought Harbaugh was doing a good job and trying appropriate adjustments to improve things each season. Also, who was Michigan going to get who is better than top-10 (as measured by winning %) Harbaugh?
Many teams fire coaches to get someone better, or have a coach leave, and find out a harsh reality: getting a top-10 coach is sort of a crap shoot. Nebraska, Auburn, Miami, Florida State, Tennessee, USC, Michigan, to name some blue-blood programs, all know this the hard way.
I doubt that Ohio State is going to fire Day any time soon. But if they do, they might find out what can happen if you fire a 45-5 coach in an attempt to get someone better.
Why USC and UCLA want joined the Big10. It’s silly to me. Yes, it does bring in more strong teams into the Big10 but they are better off in the PAC 10.
There is waaaaaaay more money and media exposure in the Big 10 than the Pac 12. For example, the Big 10 just completed the biggest media deal in the history of college sports: $7 billion over 7 years. And they share it roughly equally among the schools in the Big 10.
The Big10 western division teams needs to do better.
The Big 10 will get reorganized when USC and UCLA join.