Think about it. Asuma cut Kisame with a little tiny blade extension, which Kisame lazily dodged. The question is, if Asuma made a big-ass wind blade like in the last chapter, could he have had the perfect chance to cut off Kisame's head thus bringing an end to our favourite smexy fish man? Probably the dreaded plot-no-jutsu. However its probably for the best. Otherwise Naruto wouldn't have all the screaming Kisame fangirls to keep Kishimoto rich, eh?