What's not weird is that both lists have a Kentucky school (first list, Centre College and second list, Transylvania University). When I was at UK, I was told that UK had been ranked the #1 party school in the US at some point in the 1950's. Then again, when I was at UK, Centre was just getting sororities. Fraternities have always been strong there.
As for the University of Wisconsin, sure, it's really cold and there is not much else to do but drink/party-or study. I keep track of Madison because two of my three brothers now live around Madison and I'm there a few times a year. But being from the north (Chicago) and having gone to college in the south, I learned firsthand that southerners can party in ways that northerners would not even think of.