These are professional athletes playing a grueling, 82-game schedule. The players have an average of 3 games a week for the better part of five months...and then the playoffs begin.
Leaving tendonis aside, I would imagine every player has sore knees, arms, etc. by this point of the season. In that context, which player wouldn't benefit from an extra night's rest? An extra night not spent running and jumping is reserve wear and tear on the body--hopefully, some extra juice for the WCF.
We've already won THE GAME that matters. I say say sit 'em both. We can and should win without our big guns on the floor.
to see the rest of my "oversized" signature. "Leadership is diving after loose balls." -Larry Bird