Iggy's about the same. Thad's looking good at everything, except his one main weakness (ball handling). He definitely has the talent, and hustles his butt off, but he's a year or two away.
The main difference so far this year has been defense and rebounding. We're outrebounding our opponents by 6 per game, and holding them to 39% shooting. Reggie Evans has helped in both regards, and Dalembert's playing better defensively as well.
Right now with Willie Green and Reggie Evans starting, there's no spacing in the paint. I think this is somewhat limiting Iguodala, and the team offensively is challenged with the first unit. Both Green and Evans need to be backups for the team to be playoff contenders. I think Thad will become the starting SF (and move Iguodala to SG), but I'm not sure it'll be this year. PF is the biggest question mark. I like Jason Smith, who's been a pleasant surprise but i'm not sure I see starting potential out of him.