Bit of a leap you make there. I'm absolutely aware that IU fans will be cheering for Iowa. It's the old "my two favorite teams are" thing.
As far as match ups go, my point was exactly what I stated before. If you're playing in the semis, you're not going to get a stiff for an opponent. Personally, and I can't speak for any other IU fans, if you made it a life or death decision for me, I'd prefer that IU play Purdue again. Mainly because it would provide that second meeting that needs to happen every year. Beyond that, I like the chances of beating a solid opponent twice in one season more than beating an equally solid opponent for the third time in a season.