Greatly lacking is a bit of an overstatement. Actually it's quite a big overstatement. If that was the case then they would not be winning much would they? It is a team game, and when him and Bargnani
can be something of a defensive anchor under the basket, then it makes a big difference. When the bigs need to immediately focus on what is happening on the perimeter, at the point of attack, the whole team suffers.