He moved pretty far, I'll cede that his arm could have gotten to him instantly but regardless the other team members stealth would have been vital here, they have long range attacks that unless you see them ramping up are unavoidable (nothing moving once it has started so you can't dodge it by noticing it at that point).

Shikamaru's shadow was pretty close to them when the blades landed as well, it would have been more interesting to see if Kakuzu could have reacted quickly enough after they landed to the shadow getting to him.