Iowa gains ~320 ypg, right?I think after the game you will have a little different opinion of Iowa's offense. They don't put up gaudy stats, but they are definitely better than the national reputation.
I think Iowa is efficient on offense. They are fundamentally-sound. Opponents can’t allow Iowa to run with impunity - especially Purdue. Iowa’s offense is not designed to chuck the ball around the yard. Iowa doesn’t have scary WRs. They have tough WRs who get open but don’t scare you with speed or athleticism. They don’t have a Rondale Moore or a David Bell.
Not saying this to impugn Iowa’s offense, QB, or WRs. Iowa scores in the red zone. Purdue has not been scoring in the red zone lately, at least not TDs.