Sorry you didn't catch the lite snark in that first listing. It wasn't comparing Frost's record to Harbaugh's record, it was the situation of their hiring. Harbaugh was the prodigal son returning to the team he quarterbacked in 2015. Frost was the same in 2017. They were both no-brainer choices at the time they were hired.
Fun fact: if Jim Harbaugh hadn't beaten Ohio State last year, a significant portion of the fanbase wanted him fired. Harbaugh was also considered damaged goods after an 8-8 season with the Niners in 2014, having irritated management till they fired him. Scott Frost had the smaller resume by far, but was the nationally heralded golden boy on his way up.
In other words, the best case scenario in 2015 for Michigan was our best case scenario in 2017. Just didn't work out.
OK. Very similar circumstances at time of hire, yes. Not similar in how it panned out.