Eventually I’ll get to the actual fight…
These two are straight-up gods with a multitude of abilities, but many of their abilities are a little hard to measure – Zeus because he’s from a wide array of stories and legends with many variations rather than one definitive anime/manga or comic, and Arceus because most of his actual attacks are only expressed against other Pokemon and his creative abilities… well, we’ll get to those.
Zeus is the king of the gods of Greek Mythology, and has the powers to match. By how much varies – some just quote him as being stronger than the other Olympians, but others say that he’s stronger than all the other Olympians put together!
In fact, there’s only really been two conflicts in the myths great enough in scale to challenge him – the Titanochamy, a great battle where he and his siblings overthrew his father Kronos, and his battle against the Father of All Monsters Typhon (a character who really doesn’t get the attention he deserves, but anyway…)
First and foremost among these: the gods are immortal, and it is heavily implied they may actually be completely unkillable, even by other gods. Defeated gods and titans get imprisoned in Tartarus or have any number of cosmic punishments inflicted on them, but they never get directly killed, even when would-be fatal injuries happen to them.
In addition, Zeus has shown himself to recover from such injuries remarkably quickly. After his first battle against Typhon, Zeus had all the tendons in his body ripped out, but after Hermes stole them back he just stuck them back in and got back to fighting. His general durability is through the roof as well.
Of course unkillable isn’t the same as undefeatable, and there are ways of keeping him from coming back for an extended time. In addition, his immortality has never been quite proven against total full-body disintegration, which would perhaps be possible by the likes of Goku or Vegeta
Power: Zeus’ power shook the universe when he fought Typhon, and he was proven to be easily able to pick up and hurl entire mountains. Not quite up to Superman in sheer physical strength, but still immense in its own right.
Thunderbolt: Zeus’s Thunderbolt is a magical weapon forged for him by the Elder Cyclopes
Shapeshifting: Zeus is a master of transforming himself and others, a power sometimes forgotten and easily demonstrable here – can the opposing team resist it at all? Even Vegetto was able to be turned to candy by Buu (though saying that, he was able to keep fighting even in that form), and Superman has no resistance to magic. Only Thor might have some inherent resistance to such a thing. I suppose since Zeus has never been directly seen to affect other gods with his powers, it’s possible he’ll have trouble transforming Goku and Vegeta in Super Saiyan Blue form…
The creator of his (her? Its?) universe and one of the most powerful of the godlike Legendary Pokemon. That said, I feel Arceus’ powers may have diminished post-creation (where did those “thousand arms” go?), perhaps split off into other Legendaries. That’s all speculation though, what is Arceus capable of?
Offensive Power – Arceus has a wide range of moves covering almost every imaginable element, and is equally good at utilising close-combat strength and ranged magic. This gives Arceus the versatility to go toe-to-toe with almost any foe.
Durability: Similarly, Arceus’ natural toughness is backed up by an array of defensive abilities
Speed: Arceus is immensely fast by most standards, but he might have trouble keeping up with the likes of Superman or Goku
Multitype Judgement: Arceus is capable of adjusting his type before a battle, changing his powerful Judgement attack to match. While there’s no opportunity to switch mid-match, there may be one already ideal for this battle – By using the Spooky Plate, Arceus can become a ghost.
This renders him immune to ANY “Normal” or “Fighting” attack as they pass through his incorporeal form.
But what do these types mean? What, if anything, does that make him immune to? Well obviously basic hand-to-hand attacks from Goku, Vegeta or Superman are out. Given the nature of Ki I would be inclined to say Kamehameha and other Ki energy attacks are also Fighting-type in the same way Aura Sphere is (though it could be Fire or Electric if the “Kamehameha is plasma” theory is true). Either way it’s no defence against Superman’s Heat Vision or Thor’s lightning.
Creation: Arceus is said to have created the Pokemon universe, and one event scene within HeartGold and SoulSilver looks very much as if he could create another. That said, he only does so in a specific ruin, seemingly assisted by a very large number of Unown. It’s possible he can’t do such a thing freely and given that we don’t know that, I won’t be counting any creative abilities in this fight. It’s an impressive demonstration of his cosmic creator role though
Next up will be Dio Brando the vampire Stand User and Simon the Digger, whose drill pierces the heavens. I will complete this! Eventually!