I personally think Kakashi stands a fair chance.remember when kakashi was against deva path.we believed him to be no match strength wise he was not,yet if it hadnt been for asura path's intervention deva path would have been a goner.thats why even pain required two of his strongest paths to take on Kakashi.while during that time Kakashi was unsure if he can win or not in sauske's case he was ready and confident