Iowa is proving that the well-worn, Defense wins championships is not always a statement. Most often, Defense wins championships is the first half or thought of a statement, followed by a comma, ellipsis (or three "dots"), and, when, if and so forth.
Iowa's 2022 D is damn good. But Iowa's defense is not enough: Iowa ain't winning the B1G, much less the CFP, this year.
Hell...Iowa may not win another game, in 2022...despite its D continuing to play well.
And Ohio State may prove that the truer statement is Balance wins championships, in 2022.