The special set is easily its best set at the moment on the basis that the meta is horrendously underprepared for it. All of those missed OHKOs and 2HKOs are scored after rocks, which are completely mandatory for it anyway. Also, those are assuming that the targets are at full health - which they usually arent.Maybe is aimed to kill things that take V-Create and Bolt Strike, but is mediocre IMO.
Some calcs:
252+ SpA Expert Belt Victini Glaciate vs. 252 HP / 76 SpD Garchomp: 326-389 (77.6 - 92.6%) -- guaranteed 2HKO
252+ SpA Expert Belt Victini Glaciate vs. 252 HP / 112 SpD Hippowdon: 178-211 (42.3 - 50.2%) -- guaranteed 3HKO after Leftovers recovery
252+ SpA Victini Blue Flare vs. 252 HP / 112 SpD Hippowdon: 220-261 (52.3 - 62.1%) -- 98.8% chance to 2HKO after Leftovers recovery
252+ SpA Expert Belt Victini Glaciate vs. 200 HP / 0 SpD Dragalge: 132-156 (41.1 - 48.5%) -- guaranteed 3HKO
252+ SpA Expert Belt Victini Glaciate vs. 0 HP / 0 SpD Multiscale Dragonite: 156-185 (48.2 - 57.2%) -- 90.6% chance to 2HKO
252+ SpA Expert Belt Victini Glaciate vs. 0 HP / 0 SpD Mega Altaria: 149-178 (51.2 - 61.1%) -- guaranteed 2HKO
Special dark is amazing in the current metagame due to its lack of users (iirc the only other notable special Dark-type is Hydra), meaning that people have a habit of underpreparing for it.Why do people run Dark Pulse over Hyperspace Fury on Hoopa?