Will-O-Wisp Sableye is not a counter or check to Arceus-Normal either. To quote something I once wrote to my friend:
Originally Posted by PokéMaster ForeverThe primary method by which an excellent Übers team deals with Extreme Killer Arceus must not be through trying to burn it with the move Will-O-Wisp. Let's say there is a team like mine which has Espeon, Multiscale Lugia with Toxic and Whirlwind, as well as a physically defensive Groudon with Dragon Tail, but one of its other members, say an Arceus-Ghost, just so happens to know Will-O-Wisp. Trying to burn an Arceus-Normal with that Arceus-Ghost as a last-ditch effort to stop it from sweeping after one's Lugia and Groudon have been taken out would be fine. However, a team that relies entirely on that Arceus-Ghost's Will-O-Wisp in order to stop Arceus-Normal... in other words, a team which would be swept by an Arceus-Normal if Arceus-Ghost fails to burn it before getting taken out by it, cannot possibly be an excellent Übers team, because a team whose sole answer to Extreme Killer Arceus is a Will-O-Wisp-reliant Pokémon like Arceus-Ghost, Arceus-Steel, Arceus-Rock, and physically-defensive Giratina is, by my judgment, a team that does not have a counter or check to Arceus-Normal, and therefore automatically fails, being an average team at best, since Extreme Killer Arceus is by far the best Pokémon and most dangerous sweeper in the game. You may be able to win many battles by shutting down the opponent's Extreme Killer Arceus with Will-O-Wisp, while ocassionally having to use the move twice against one that holds a Lum Berry, but climbing the ladder and reaching #1 involves winning not just more than half the time, but doing so consistently. If you just rely on Will-O-Wisp against Arceus-Normal, you'll sooner or later find a battle in which your Will-O-Wisp user gets taken out by the opponent's Extreme Killer Arceus before you manage to burn it, and then get swept, and higher up on the ladder, this will result in you losing a number of points which would require ten or more battles to make up for... assuming Will-O-Wisp doesn't miss again within those ten battles and resulting in you falling even lower on the ladder. Also keep in mind that the probability of two Will-O-Wisps hitting in a row, which is necessary to burn a Lum Berry Arceus, is only 56%. This is one of the primary reasons why I do not consider many, if not the majority of Übers teams (including many of which created by myself in the past), to be truly excellent teams.