You're right, but you're also losing less than by doing nothing at all...you only lose prestige if the teams you bring in would be in the bottom half. Guess we'll agree to disagree.
I was speaking of prestige in a relative way, meaning whatever counter move would be made would need to be similar to the one the SEC makes. I'm not saying that the super league is the only way this is headed. But if that is the way it is viewed, the Big 10 will be looking at adding big football brands from outside their current footprint, not ISU.