The numbers seem to support that because Deng is averaging 1.8 assists to Iguodala's 5.3. In fact Iguodala is shooting better from the field as well.
The numbers can be misleadinig because Iguodala handles the ball more than Deng. Also Igoudala is shooting a better fg% because he gets more easy looks in transition. Deng actually is shooting better from 3, not by as much as I thought but I do believe he has a better jumper.