If I had to put some percentages to it, I think it would be something like this
Iowa wins by more than 20: 1%
Iowa wins by 16-20: 3%
Iowa wins by 11-15: 5%
Iowa wins by 5-10: 9%
Iowa wins by 0-4: 16%
ISU wins by 0-4: 21%
ISU wins by 5-10: 12%
ISU wins by 11-15: 8%
ISU wins by 16-20: 5%
ISU wins by more than 20: 3%
What kind of moron disagrees with predictions after the fact?