Actually Wisconsin is balanced

They skew to the run, but a lot of that is because they are salting clock at the end of the game.

The last time they played for the Big N championship (losing to Urban and OSU in a damn good game)

238 yards passing on 41 attempts
60 yards rushing on 32 attempts

Following that, in the Orange Bowl against Miami (a game they won)

258 yards passing on 34 attempts
142 yards rushing on 44 attempts

Wisconsin is a ground based offense that can throw if they have to/need to, but at their core, they are a running team.

When they are winning the game, they tend to run more, because they are chewing up clock, but it's not totally accurate to say Wisconsin isn't balanced.

Hornibrook, when they went 13-1 in 2017, threw for over 2600 yards on over 300 attempts.