It will be alot closer after this season, wait and see.
Kane won the Calder and the Conn Smythe, something Crosby has never and will never win.
Add up those two and Crosby has 6 more individual awards (being two years older). If Kane picks up the sweep of the Hart, Art Ross, and Lindsay, which if he keeps up the way he's played he will; he'll be within 3.
And I don't see him slowing down next season, whereas Crosby is already on a sharp decline.
You say it's not close, I say it will be alot closer than you think. Kane's 3 cups (and maybe more) will put him above Crosby when all is said and done.