I went the other way. I moved from IN to MI. Here's how I view it.
If you look at the whole state, Michigan has more depth. In other words, if you had no classes in MI and took the top 10 guys from IN and the top 10 guys from MI, Michigan's #10 is going to be better than Indiana's #10 most of the time. There are twice as many schools in MI compared to IN. Its a population thing.
Until recently, I would have said the #1 guy in MI vs the #1 guy in IN dual for each weight would also favor MI if it were a dual of 14 weights. I think IN has closed the gap there now but for all the great studs in IN, MI is just as good.
The only way I would agree that IN wrestling is MUCH BETTER than MI is if you compared IN's 1 champ to some of the smaller division champs in MI. That would be like the comparison of how 1A kids did against 4A kids in IN.
I would put Detroit Catholic Central or Davison against any team in IN and feel very good about that chances there. I am not sure how many teams in IN have multiple Fargo All Americans every year but DCC can do that as well as a few others.
Indiana's 1 champ vs Michigan's 1 champ would be a great match. The #1s in IN are great. The #1s in MI are great. I don't really think there is much difference there. MI also has the weird travel rules that hurt exposure but man some of the kids are still super good.