Nah, my statement was based off of last season. The starters were 6th in the League in rebounds per game with 29.8:
http://www.82games.com/0809/STSORT4.HTM
with the bench doing BAD.
Based on DRR (Defensive Rebound Rate - % of defensive rebounds grabbed by the team) we were 13th:
http://hoopdata.com/teamdefstats.aspx
As we're a slower team (pace) than a lot of others I think this would hold more sway than total boards. Pace is another reason why I think the starters' total boards is fairly impressive.
Boris is a weak rebounder...it is what it is. Crash however is an excellent rebounder and I also think TC will average more boards here because of that (like Mek previously he won't have a strong 4 contending for boards).