Minnesota gets dinged this season in strength of schedule because 1) the Kansas State match was cancelled and 2) they played four teams with RPI's (this week) of: North Carolina (146), North Dakota State (238), UWGB (155) and Georgia State (291). North Carolina was part of the ACC/B1G challenge and North Dakota State is having a down year.
And of course, the Gophers losing to Stanford and Oregon didn't help. Anyway this years strength of schedule is likely an aberration.
As far as the RPI's use by the committee. Last season, the top 16 seeds were also the top 16 RPI teams. The top four seeds were Penn State, Florida, Stanford and Kentucky. The top four RPI teams were Penn State, Florida, Kentucky and Texas. The committee dropped Texas and inserted Stanford. Minnesota was number 7 in RPI and was 7th seeded in the tournament.
As with women's basketball, the committee may not use RPI; but it sure tracks whatever they do use.