Galactus wants a snack
Scenario: Galactus shows up in an alternate Universe. He's slightly hungry, but not famished and just wants a little snack. He sends three heralds out and they each comeback with a potential meal.
The first herald has found the planet OA, and is protected by the Green Lantern Corps
The second herald has found the planet Earth which is protected by the JLA (Superman, Wonder Woman, Flash, Martian Manhunter, and Batman)
The third herald has found the planet Cybertron which has been taken over by Hank Henshaw and his ten power rings.
Rules: Picking ANY three of Galactus' lackies, past or present, which planet, if any would end up as the next meal?