I would disagree on this. Okay, maybe it shouldn't be unranked, but probably down in C. If you look at every pokemon from A- to S+ (meta defining mons), 7/21 of the mons counter this mon. Even if it were to be tier-specfic, look at Lunala, Deoxys-A, Lugia, Mega Mewtwo Y, Psychium Z Tapu Lele...