A comparison of the cumulative "recruiting points" over the past 4 seasons for Minnesota, Illinois, Northwestern, and Purdue is bound to be less than accurate if you're trying to assess the current strength of a roster. Adding up those points (based on an annual snapshot in time) doesn't account for players subsequently transferring out of a program or into a program. On the one hand, some of the highest-ranked Illini recruits in 2015 and 2016 (such as Gabe Megginson, Ke'Shawn Vaughn, and Zarrion Holcombe) are no longer with the team. On the other hand, Jeff Brohm enhanced the strength of his roster by adding a number of productive transfer players and junior college players after he became the coach at Purdue.
No doubt. If I were fancy with spreadsheets and didn't have a full time job, you better believe I'd get super granular