Well, it was a pretty simple game schematically.
Iowa's game plan, as it developed, made some sense. Their interior OL - particularly Banwarts - were doing really badly in the run blocking, and frankly only Wirfs looked consistently competent. Michigan, quite frankly, is rather dumb or obstinate as a coaching staff: when Iowa motioned Tyler Goodson to the top of the field, remember, Michigan simply left the linebacker (Glasgow) on him, in a cornerback type position. The result was an easy first down catch for the Hawks. Again, Don Brown may not be a total moron, but his coaching results in some hellaciously stupid mismatches. Iowa tried to exploit them, but, Michigan had a counter: lots and lots of blitzes, for which the Iowa offensive line was worse than unprepared.
Iowa's play-calling wasn't great, but that's because Brian Ferentz is limited in this area. Like Anatoly Dyatlov would say, he's not great, not terrible.
The other thing to keep in mind is that the officiating Saturday was quite bad, and made Iowa's situation worse. This is to be expected: the refs in this league will not call defensive holding against Michigan DBs, in Ann Arbor, more than 2 or 3 times a game. They also ignored some holdings by the Michigan offense, and only started calling holding on Iowa in the 4th quarter once the Iowa blockers started getting desperate. That attitude of "let 'em play" favors Michigan's defense.
The PI non-call on the Martin play was ridiculous, and probably cost Iowa 7 points. (also worth mentioning that Cole Banwarts missed a block on the previous play, which went 5 yards, and could have gone all the way in otherwise). Michigan's obstinate "run man until we die" passing defense is relatively simple to beat, if you can get time to throw, or the QB is mobile. Iowa could not keep Stanley up right, and the defensive holding often took care of the rest.
Stanley's three interceptions were all unfortunate, although the third wasn't his fault. Of the three, the second was by far the worst, for it cost Iowa an opportunity at points. Overall, Stanley's play was not as bad as it looked - by the end of the game, he had very little time to throw, and his receivers began to drop passes. In particular, Wieting and Ragaini. Stanley made several "big-time" throws again, but, all for naught. His lack of mobility was a definite factor, but, that's what he is, and he can't be harshly criticized for his nature.
Defensively, I'm actually not convinced this game says a lot about Iowa. They did fine, and played with decent intensity, but the honest truth is that Jim Harbaugh and Josh Gattis did a HORRIBLE JOB coaching their offense. Michigan changed their scheme over the off-season, and now runs a zone read type of run game. But the problem for them is, Patterson only keeps like 3 times a game! If that! So there's no threat there, and a team like Iowa can just hone in on the tailback and turn every rush play into a short gain. And that's what happened. Meanwhile, Michigan only ran two possessions - TWO!!! - where they tried a serious downfield passing game. These two possessions resulted in a touchdown, and a missed field goal opportunity. So the only two times Michigan actually went to its strength, they succeeded. Naturally, Michigan chose not to try this more often. Perhaps this is because they mistrust Patterson (who isn't great, once he comes off his first read from the pocket). I don't know. It's stupid.
I would frankly describe this game as unique. Feel free to be down on the Iowa coaches, but the Michigan coaches, in my opinion, were worse. What Harbaugh and Gattis are doing is total nonsense. They out-coached themselves but won anyway. For all of the criticism of Kirk Ferentz as a stale and staid coach, Jim Harbaugh, when left to his middle-aged instincts, makes for a drearier experience. I hope Michigan loses to Penn State, Michigan State, and Ohio State by a combined score of at least 110-20.
I regret watching it!