Once again you are only focused on the records of the two situations. Harbaugh actually walked into a much better situation. He had young talent on the team prior to becoming head coach. Stanford had many more returning starters on both sides of the ball and more depth throughout the roster. The previous coach was doing a decent job at recruiting and building a foundation for the team although most of their good players were still extremely young. This will be the same situation Harbaugh walks into if he takes over for RR. It's not about his coaching greatness but the the perfect timing to be taking over.
Saying RR had a better situation because Michigan had a better previous record with all of the players who left for the NFL is just dumb. Rich Rod getting to 7 wins in year 3 is much more impressive than Harbaugh's year 3. Harbaugh walked into a situation where he wasn't starting from ground zero.