So, if I understand this ... Iowa isn't the predictable ones, the opposing defenses are because they frequently line up in a formation - with a certain front, spacing - that is vulnerable to attack by a stretch run to the short-side. Not like they're baiting Iowa into a phone booth with shifted coverage and using the sideline as a 12th defender in run support or anything like that. Huh, no wonder it's so successful.
Scratch that question off the list. LOL - I threw it in out of cynicism; someone actually asked it with a legit intent.
Of course the defense is trying to force the offense into a tough decision, that is the point. When they set strength to field, they are forcing you to either run to numbers advantage but with less space to work with, or run to space against a numbers disadvantage. You could just as easily say that every time they run to the field side against the numbers that they have been "baited" into that decision. Do you really think you have this whole thing figured out, but the coaches have no clue what is going on out there?