For a little perspective, the "mediocre" teams in the B1G are top 50 teams and have a good shot at being the NCAA tournament. Purdue and IU have two of the toughest home courts in the country. Calls just don't go your way on these courts, and this goes back through a LOT of years. It probably even contributed to Lute Olsen leaving...
That's why I put "mediocre" in quotes, because the top 11 teams are Quad 1 (although Indiana is Quad 2, but barely).