US News College rankings

Continuing on the game of rankings: US News has posted its rankings, Minnesota schools are here: Minnesota college rankings
It shows, among national universities, The U ranks 61, but 22 among public universities.
This is considerably worse than Academic Ranking of World Universities posted yesterday which placed us 28th in the world (though arguably 7th among North American university systems).
It is however much better than than this news: University ranked 524th by Forbes.
I wonder if these guys really have a methodology, or just a roulette wheel.