This is obviously iffy analysis based on recent results, but it brings up another point:
At least at the pro level, the importance of home field has been waning for years. It appears this analysis assumed the Gophers can't beat anyone decent on the road (but should be solid against Iowa at home).
In the NFL HFA has almost ceased to exist. Teams are better at traveling than they once were. The Gophers have done pretty well on the road and traveling to neutral sites in recent years, often better than at home. The wisconsin and iowa games have gone better on the road in recent years.