Riley sucked here (for the most part) and Rhule sucks here. Frost really sucked here. By all accounts, Riley and Rhule are super great guys, hard working and super professional.
More than likely, all 3 are just lame at coaching and not horrible cheating husbands (that doesn't even matter), hard core drinkers (also don't matter) and addicted to golf.
I think you bring up a good point here that I want to expand on. Mike Riley and Matt Rhule indeed are good guys, hard working, professional.. and their average winning percentages at one time I checked, were about the same.. There is a bell curve for coaches and by the nature of the game, the average coach is going to win about half the time.. it's kind of a natural outcome of a 2 participant, win or lose game.
So what is different with Scott? He wasn't old enough, mature enough, or ready for that job by what Bill stated in his book.
So here a few facts that I went and looked up:
Current College winning % Current age
Mike Riley .531 (72)
Scott Frost .471 (51)
Matt Rhule .516 (51)
Did you know that Scott is actually 1 month older than Matt?
granted age and maturity level are very different things, but I thought it was interesting that Matt is actually the youngest of the 3.