Here is a youtube look at Barnes
http://www.youtube.com/watch?v=h_OosSMj50Y
http://www.youtube.com/watch?v=qNcIgrTTt7g
http://www.youtube.com/watch?v=3LPWg9-IVR0&NR=1
http://www.youtube.com/watch?v=XyAE-_gJv94
In watching highight clips you can only get a few things, but they are interesting.
1. Matt finishes well in traffic. If anything, he seems more inclined to go into the tall timber better than Marion who always avoided contact. He may not go quite as high as Shawn, but he really can fly. He is strong enough that small bumps doesn't seem to throw him off the way Barbosa gets effected. Mostly they showed him on the break, but he looks to do well on the alley oop as well.
2. Banres has aleternative shots. In clips he shows a short hook, a finger roll, a floater, and a running bank shot. Not clip will show the misses, but its not Barbosa "all or nothing" when going inside.
3. Barenes has moves in traffic. The clips don't show many stright drives to the basket, but do show some good moves in traffic as he works his way to the basket. He has a very good spin move that opens up dunks.
4. Barnes shows good form on his shot. They only show catch and shoot (suggestive in and of itself), but he has a very smooth form and no hesitation when getting the ball on drive and kick plays.
The clips don't show if he has a quick first step, but seems to be comfortable dribbling in traffic. On offense he looks to be better than Marion who has an ugly jump shot that defyed adjustment.