I feel this ranking is pretty low also considering that Notre Dame, University of Chicago (since they have a Big Ten relation), and Northwestern are ranked higher at 33, 20, and 18, respectively.
Only three Ohio schools ranked higher than Michigan, being, Denison University at 77, Oberlin at 51, and Kenyon College at 32
Other Big Ten schools that were ranked were:
Illinois at 97, Penn State at 192,Wisconsin at 212, Indiana at 222, Ohio State at 246, Michigan State at 282, Iowa at 315, Purdue at 362, Minny at 418, and, finally, Nebraska (since they are now family) at 442
Here's the link for the full list: