(I don't know if anyone already mentioned all this. If so, ignore the post)
Now I know that stats don't completely tell how good a player is, but Deng's are ridiculous. 82games broke dont player stats according to opponent level: Good, Average and Poor (They don't say how they assigned teams to groups, but I think it's based on record). According to the stats Deng scores at 15.1 ppg on 42% shooting against Good teams, while he scores 20.9 pts on 55% shooting against Poor teams. While a drop off against good teams is expected, his decline in pts (5.8) and shooting % (13) are the worst in the league (I think) among important players. While some of that may be due to the team's struggle as a whole, players like Rudy Gay were still able to take care of business against good teams, regardless of team crapiness.
Hinrich, Gordon, and Nocioni were consistent(ly poor) regardless of competition.