If what surprised you was Figure 1 in the paper [1], note that it depicts only CS departments. The CS department at UW is widely considered among the best in the United States. Not that this is definitive, but it's ranked 6 in the US News and World report [2].

[1] http://advances.sciencemag.org/content/1/1/e1400005 [2] http://grad-schools.usnews.rankingsandreviews.com/best-gradu...