.

So you're telling me that the defensive system has drastically changed from this year to last? Because if you're not, then why could they have led the league in defensive rebounding last season, when the system was the same and the personnel was too? Face it, all you're doing is making an excuse.
No, im saying the defensive emphasis has changed and a few key personell have not been healthy to fully realise it.

Deal with it, it's not that complicated and a valid reason. There's still a half a season to go to see how it plays out.