>>34706285In practice, Arceus is a bulky and speedy pokemon, not so much an offensive one. Yes, it has Extreme Killer, but more and more that's becoming unreliable, especially when you are giving up a 120/120/120 defensive powerhouse that outspeeds most of the meta, has a bitchin support movepool, recovery, and a respectable uninvested offense to poke aggressively at things that the rest of your team doesn't like.