All 3 are scientific geniuses if im not mistaken
I'm staying away from this-
goddamnit... has anybody ever seen or seen anyone ask batman or iron man to steal Silver Surfer's power, Galactus' power, a character that was, at the time, for all intent and purposes GOD's power, cast a magic spell or even build a time machine?
I'm sayin' tho.
Stark is a technological genius.
Batman is a master tactician.
Doom is both, and on an insane level.
This is the true answer.. doom kicks both of their asses