In an odd way, this situation is more like Diaw than JJ. The decision to low ball JJ was based on a distorted market in 2003-04 when wings were not that highly paid. As it was, in 2004 Manu only got $53 million and he was a much bigger star than JJ.
BC has successfully put all the blame on Sarver, but IMHO he did not fight hard enough for the $50 million. I don't think he'd admit it now, but my read on it is that he thought JJ and Q were about equal in talent and they had to pay extra for Q due him being an RFA. It seemed improbable that JJ would become hugely better than Q.
But with Bynaum, what is gained by giving him a max contract now or a year from now? If he gets hugely better, they still end up paying the same amount. If he regresses, the Lakers save a bundle.
Two years ago I failed to voice my reservations strongly enough against signing Diaw to the $9 million for 5 years. Mostly I was saying it was not necessary to sign him to an extension at all, because he was (is) not the type of player to get a max contract offer from a team trying to force the Suns not to match.
Teams can only get RFA's when the original team is no longer interested (Salmons or James Jones) or else th;y have to pay a big premium to keep the former team from matching. I looked at what Boris does (biggest strength is ball handling) and concluded he was worth more to the Suns than anyone else. Nobody was going to get into a bidding war for an undersized, pass first power forward. So why extend?
Big money goes to centers, point guards, and guys who score a lot of points. Bynum will get the max if he plays well because centers are so highly valued. But extending him doesn't save them anything.