I have heard the comment made many a time about what the selection committee used.. Here is an article confirming that as early as last year the committee relied HEAVILY on Sagarin, Kenpom, and even a few others besides RPI..
https://www.nytimes.com/2016/03/13/...-a-seat-at-the-selection-committee-table.html
https://www.nytimes.com/2016/03/13/...-a-seat-at-the-selection-committee-table.html