Originally Posted by Fat ntiller
Ok, so I've been playing around with OHKO's for a while now, and my biggest issue is that the best potential abuser has better things to do. Sheer Cold Kyogre is not a bad set, but it just isn't as good as regular Scarfogre. The opportunity cost of giving up Choice Scarf + Water Spout coming off of a massive 438 Spa just isn't worth a 30% chance to kill the handful of things that could switch into a water spout. While Sheer Cold does a fairly good job of killing Kyogre's counters, it makes Kyogre a lot less threatening to begin with as random offensive pokemon can usually beat it. On the other hand, I have tested Guillotine Gliscor as an anti-stall pokemon and it works wonders. Taunt lets it shut down Lugia, Ferrothorn, Blissey, Chansey, Skarmory, most Giratinas, Forretress, and basically any defensive pokemon in the metagame. This usually forces a switch, which gives Gliscor a free chance to fire off a OHKO or toxic something, depending on the threat and the situation. The only two stall pokemon I can think of that don't fear this strategy are Skarmory and Forretress, and both can do nothing to hurt Gliscor back (although Forretress can still spin).
The ability to have NO safe switch ins, as opposed to being counterable by what every somewhat decent player brings to check you, isn't worth consideration?
It seems that this at least somewhat offsets the chance of a OHKO actually hitting, as they are impossible to be prepared for conventionally by many playstyles. If sheer cold kyogre was dead weight against offense I would think your position made more sense, but in fact with a bulky spread I would argue it's at least as useful as the scarf ogre you mention. Scarf ogre is prone to being weakened, and allowing almost anything to set up on its no longer collosal water spouts, and can allow things like palkia and latias to take huge shots at your team, no mater your prediction. It is a great revenge killer, but it's power is dependent on how well you can remove hazards, a difficult thing to do.
Sleep talk sheer cold kyogre can be a check to darkrai, ho-oh, mewtwo if you run a physically defensive spread, calm mind arceus forms, rock polish groudon if you run a physically defensive spread, reshiarm and even kyu-w if you run a SpD spread and keep hazards to a minimum. It can threaten these pokemon, too, without even needing to rely on Sheer Cold's admittedly terrible accuracy, by using its still powerful and very threatening Scald.