When I first thought about this question, I was very interested in who it was. So here are the results.

Points: 1. Kevin Durant 29.6 PPG

2. Carmelo Anthony 29.4 PPG

3. Kobe Bryant 28.4 PPG

4. Lebron James 26.6 PPG

PPG = Points per game

Rebounds: 1. Dwight Howard 11.8 RPG

2. Zach Randolph 11.6 RPG

3. Joakim Noah 11.3 RPG

4. Nikola Vucevic 11.2 RPG

RPG = Rebounds per game

Assists: 1. Rajon Rondo 11.1 APG

2. Chris Paul 9.7 APG

3. Greivis Vasquez 9.3 APG

4. Jrue Holiday 9.0 APG

APG = Assists per game

Blocks: 1. Larry Sanders 3.07 BLKPG

2. Serge Ibaka 2.79 BLKPG

3. Tim Duncan 2.74 BLKPG

4. Roy Hibbert 2.64 BLKPG

BLKPG = Block per game

Steals: 1. Chris Paul 2.56 STPG

2. Mike Conley 2.29 STPG

3. Jeremy Lin 2.04 STPG

4. Monta Ellis 1.91 STPG

STPG = Steals per game

Here is the site I got the information from:

http://espn.go.com/nba/statistics