Look at what scheduling good opponents did for Wisconsin and Texas. They went from unranked to #10 and #11 after big wins.
Yep - there really isn't much to lose if you're Wisconsin. A win and it catapults you to really good standing - you lose and, well, everybody expected you to.
Of course, that all only matters right now. I'd be shocked if LSU wins more than 7-8 games this year and I think, come December, that the LSU win isn't going to look as good for Wisconsin. I also think Wisconsin will only be a 7-8 win team come season's end as well given their schedule. I'm not convinced by much that came out of that game between LSU/Wisconsin.