Some of those villains want to destroy the world, right? They might help Galactus. What if a group of them approached Galactus and asked to help him. and he granted them powers a la Silver Surfer and made them into a makeshift evil Green Lantern Corps only with the Power Cosmic.
am talking about a Mad Galactus who will stop at nothing till he eats DC earth.
In MU he left it for diff reason
one: Ultimate Nillifier/ his true to his words
two: he has those who he consider freinds and is not really after earth.
but this is a thread battle i mean his mad and wants DC earth bad.
Galactus would win, the DC world doesnt know about the ultimate nulifier, galactus is at full strenght, and not weak, and from past experiences reading comics were super villians dont USUALLY help to save the world, the heroes would go down and the rest of the planet would be screwed
Galactus only eats worlds to keep the cosmic balance in marvel. THerre is no need for him to eat DC worlds.
But still, he would be no match for the entire JLA.
He did manage to seriously threaten apokolips, but those crossovers are so badly written.
Something like batman finding the ultimate nullifier would happen or the JLA stopping him i mean the green lantern corps is more powerful then galactus, he can eat a universe but i dont think he can recreate it, if the superman dynesty was alive he would surely not win, Lex Luthor is no Dr. Doom but he would help i think. If The Mask got involed he would lose i think, and earth is also protected by new genesis so they might get into the fray too.
The JLA are way more powerful than you realise. The x-men ususally only fight against mutants, whereas the JLA have regularly fought against godlike uber-powerful beings and won.
The JLA by themselves would quite easily beat galactus.