I'm guessing they'd be a 4-5/5-4 B1G team. Its not realistic that they beat Ohio St, Michigan, or PSU regularly. They can certainly beat Michigan in Kinnick. They've proven that.
MSU probably be 50/50ish series. They're still a more physical program than Iowa and Iowa would play that game in a phone booth.
I think Maryland would be a very tough place for Iowa to win. But I'd give Iowa the edge more times than not.
Before this season, Indiana would struggle to beat Iowa even in Bloomington. Going forward may be different. This is an Indiana program that physically wouldn't be pushed around by Iowa. Those days are over. And their QB & offensive play has been outclassing Iowa for years.
Rutgers, no words necessary.
Iowa has really struggled with half of the West opponents and dominated the other half so I think that would add up to a 4-5/5-4 record depending on crossover draw.