During the Sweet 16 Committee reveal a couple of weeks ago, the Committee chair specifically referenced BU's NonCon SOS (which was in the 70s at that time compared to ISU's being in the 320s). And BU was one spot ahead of ISU on that reveal Seed List.Show me evidence that it has been a factor on a team's seeding. I don't think you can.
It will be used as a tiebreaker where necessary on the Selection Sunday Seed List.