CCM30, that team looks extremely stable and from what I've tried out, no team is going to be able to beat it unless they've tailored at least one Pokemon to specifically counter it, and even then you could play yourself out of it. I would say one Pokemon and one other moveslot would be the minimum amount to specifically counter even the Mewtwo/Abomasnow combo in itself, and without that effort there isn't much somebody can do.