He has some salient points, but he could expand on some of them. Greene has been chastised for poor shot selection and being invisible in the past, much like Radmanovic, but he has more potent offensive potential and the defensive comparisons between the two aren't even close. I agree that he might be a "big" in the conventional sense as he doesn't rebound that well and doesn't bang inside much, but his value lies in his offensive and defensive versatility, a la Sheed/Odom, if he reaches that potential.
Brings up the fact Dalembert is not much of a leader, but his impact is very good for a secondary player--does your quintessential paint patrolling stuff, has athleticism to board and score around the basket. That's all you want out of your big man. I see Whiteside as a similar breed, actually--blocks shots, rebound, dunk off passes, show signs of a mid-range J occasionally. That's why I'm high on both. I share his sentiments about Casspi's toughness and he has underrated basketball instincts which is why he was able to make a pretty big impact last year for us, but with behind-the-scene grumblings a la Rudy Fernandez his play might be primed for a fall.