I really have to question whether people posting in this thread actually watch a lot of Thunder games. They talk about Perkins and his "injury" like he's walking around with a cane or something.
This season, Perk is moving around pretty well, and is going a lot of the things he did in Boston - setting picks, mucking up the paint, boxing out, rebounding, playing team defense and bodying up low post offensive players.
He takes very few shots, 3.6 a game, and only grabs a rebound every five minutes, but his rebounding role in OKC is to seal off the opposing big man, and let either skinny Ibaka or Durant sky to clear the glass. That's their scheme, and it works for them. They're a team rebounding team, and they rely on their centers Perk and Collison primarily as box out guys.
Perk fills a vital role on OKC both on the court and in the locker room. Critics can poo poo that role, and point to stats to bolster their argument, but everything I hear out of OKC is that they' re thrilled with Perkins.
Basketball is a team game, and good synergy goes a long way. OKC, with Perkins instead of Green, has good synergy. Boston, with Green instead of Perkins, has bad synergy. That's undeniable.