https://painttouches.com/2016/12/10/marquette-vs-wisconsin-preview/
This article really underrates Wisconsin's rebounding because it doesn't look at the tempo free numbers.
Wisconsin is the ONLY team in the country that is top-25 in both offensive and defensive rebounding percentage. Not only are they top-25, they are top-10 in both.
Translation, Wisconsin is the best overall rebounding team in the country. Forget the raw numbers, they are only rated that low because they play that slow.