Kyu-W needs to be ranked higher. Are we seriously ranking the likes of Bronzong and Arceus-Dragon in B while this monster is sitting in C+?
Kyu-W has perfect synergy with Primal Groudon, the best pokemon in the tier, as everything that resists ice is completely and utterly fucked by it. P.Don also provides SR and Paralysis support while dealing with Xerneas and Ho-oh who think they can take advantage of a choice-locked Kyu-W.
Kyu-W on the other hand destroys just about everything P.Don hates including but not limited to Groundceus, defensive Yveltal and Lugia.
Chansey, the only pokemon who can attempt to wall it, is unviable as long as Mega Gengar is a thing (another great partner for Kyu-W, by the way, but I'm not emphatizing this as much as P.Don because it's a mega and not nearly as splashable) and Blissey who runs Shed Shell can't take two Focus Blasts so it's not a surefire counter.
Kyu-W also deals with the occasional Sturdy Skarmory and Forretress leads nonsense, is a very viable Sleep Absorber with its Scarf set if it's running Sleep Talk so it can check Darkrai if needed, threatens almost every single hazard setter/defogger/spinner (Ferrothorn, Exca, Tentacruel, Giratina, several Arceus formes, Bronzong, Klefki and more).
If you need a special nuke who can punch holes without worrying about resists (because you can count on one hand the number of viable ice resists in the tier) and who's a lot more versatile than most people give it credit for (both choice sets are viable and so are LO, Sub+3 attacks, SubRoost and surprise resist berries) Kyu-W is your guy. Now people get it out of C+ because it's just painful to look at.
arceus dragon is a bit worse than arceus water but has a few things that make it situationaly better, bronzong can check the lati twins, check ekiller lacking shadow claw, check xerneas if it's still healthy, check mmence in some scenarios, some other stuff, and sets up rocks. we've been over kyu-w in the past and you know this, at this point I don't even know if you're trolling or not. I'm probably doing the wrong thing by taking the bait, but if you want a detailed counter argument to every point you could bring up, please check out the last 7 or so times you've posted and re-read the posts we've made. they should explain, all of them combined in great detail, why you're wrong. and unless arceus grass stall starts becoming a common playstyle, you will continue to be wrong.