I just took a look at the Iowa statsheet. I didn't watch the game so I'm perfectly willing to assume they ran away from him and/or otherwise gameplanned around minimizing his impact. Also, for all I know he had another 20 times that he collapsed the pocket or otherwise disrupted the play. But all that said....
2 sacks, 1 assist on a tackle. For 3 total tackles.
That's not bad by any means, but it doesn't look like the stats of somebody who took over a game.
Stats don't tell the whole story. He was disrupting the QB pretty much all day, felt bad for the backup QB who took an Ott to the chops right as he let go of the ball on one play. Tough kid though, got right back up. Ott's no superhero, and it was a young FCS line, but watch the game and you'll see he was a force on Saturday.