I don't think Wisconsin gets in with a win, they need the blowout. If Wisconsin blows out Ohio State I would expect Ohio State to drop from the Top 4 and be behind Wisconsin, even if by one spot. This is exactly what happened in 2017 with Ohio State/Wisconsin. They aren't totally comparable situations, but I don't think the CFP can ignore a blowout win. Unless they admit Ohio State had nothing to play for and were in regardless...thus inferring they weren't trying hard. I doubt they do that, I just don't think they can logically place OSU over Wisconsin at that point. I think Wisconsin would get rewarded for blowing out Ohio State.