I frankly don't understand the analogy linking Salmons to Crawford. They're both ball-dominant high-usage players, but Salmons is fairly more efficient and less selfish. In fact, I still remember when he was accused of not being selfish and assertive enough, back in Philly (something he certainly corrected by now). Besides that, Salmons has always been a good defensive player. He's grossly underpaid.
As for being a fluke, just check his last season stats as a starter. This is basically the result of a big change of mentality and mind-frame and small improvements on his skill-set.