I agree. A lot of it is certainly comfort with the volley. I just know that if he chooses the right ball to come to net with, his volleys will be easy. I think a lot of the problem with today's players aren't with the actual volley. It's with the approach shots.Doesn’t have a good enough volley yet.
Even though Federer and Nadal are probably easily Top-3 with their net game, I think it is because their approach game is so stellar. Both of those guys always choose the right ball. The rest of the tour seem to come to net at really bad times... or on poor approach shots.