Because it is extremely difficult, even for elite teams loaded with 4 and 5 star talent (which Iowa is not), to go undefeated.
Don't get me wrong....I would love to see the Hawks go 5-0, or 4-1, the rest of the way, but the realist in me realizes this just might not happen. Maryland is going to be tough. Indiana will be Iowa's most difficult opponent of the year IMO. And Nebraska (which is a lot better than their record) would like nothing more than to knock Iowa out of the Big 10 title game...I expect to see the Huskers give their best effort.
If the Hawks make the Big 10 championship game....they will have earned it. Even if they go 2- 3 the rest of the way, that will still be a darn good season.