@emmafrostxmen: No metal can withstand a nuke
You would be surprised, as I am about this board's general ignorence regarding this matter.
First, nukes are "high explosive" kind of damage, which is pretty the opposite of "armor-piercing". You see, armored targets, like those old warships on the Bikini Atoll tests which had like an average of 2" of metal armor, were pretty much nearly intact after the explosion. When you want to bust an armored target, AP ordnance are the thing. Nukes can do nothing against a bunker that you would build in your backyard.
Second, the nuke that both Supes and Doomsday exploded in space - you know that atoms are necessary to provoke the chain reaction known as nuclear fission, right? Well, there are no atoms in space.
Doomsday is way over-rated.
What are you talking about??? Those ships were in tatters dude despite the fact that they were not even close to the epicenter of the blast considering the initial mushroom didn't even engulf them. Nukes will absolutely annihilate a bunker in your background if it is anywhere close. Superman and Doomsday were literally hit directly with the nuke.
You clearly do not know enough about nukes to be talking like this... The chain reaction you speak of (nuclear fission) is self-contained in the bomb. It does not require anything outside of the bomb itself. The nuclear fission is a chain reaction of uranium or plutonium atoms (located within the bomb core) being split.