Agreed. The killer has been when teams send players back on transition defense and ISU doesn't get the defensive rebound (other team is getting the offensive rebound) even with the advantage of number of players going after a rebound.
This seemed to be the case with teams like West Virginia or Baylor who both had multiple elite offensive rebounders (Motley, Prince, Gathers, Holton, Williams). If a team is getting offensive rebounds while still getting defenders back to negate transition offense you are in any game you play. For Virginia Gill, Tobey, and Wilkins have respectable offensive rebounding rates, but as a team it is still nothing like Baylor, West Virginia, or Kansas State for that matter.