Iowa was called for 10 PFs while Illinois was called for 13. Additionally, keep in mind that Illinois was intentionally fouling the last few minutes. Of the top of my head, I believe Gatens went to the line twice after being intentionally fouled, White once and Marble once. In other words, Illinois got more non-intentional foul calls than Iowa.
Further, looking at the Illinois board, the only criticism regarding the officiating that I've seen is that "[t]he refs decided to call nothing today...." In other words, neither Iowa nor Illinois were getting calls.
Scout.com: 9 Observations from the Iowa BTT Game
I recall seeing fouls that I thought should've been called both ways. However, win or lose, at the end of this game, I don't think either team could point to officiating as a factor in losing. Iowa won this game on a neutral court straight up. The better team is clearly advancing.