If you guys don't know what Arceus is capable of (I say this because Galactus is one tough opponent) then it is a near omnipotent Pokemon. Go here for more info: http://outskirtsbattledome.wikispaces.com/Character+Profile+-+Arceus
It created the entire Pokemon Universe, Arceus can halt time (don't know for how long) and can make objects vanish out of thin air. He has the potential to wipe out the universe and possibly can take an explosion that destroys the entire Universe.
Both blood lusted
Galactus is mid fed
Both are fully aware of eachother's abilities.
If it's a win to Arceus, then can he take on a full fed pissed off Galactus?
If this is a curbstomp or a complete easy win to either sides, then i'm sorry! and I actually did research on this... an improvement I suppose 8-)
AND Galactus has no UN, coz dat shit's cray cray