even if you want to argue that they were close to superman level or at it, he wasn't alone at any point. and superman was doing pretty well against that same army...
while doomsday may have helped battle an army of gogs' for a hundred years, i don't really consider it a very impressive feat. each gog was below superman-level [by quite a wide margin] after all. *shrugs*
...plus it took that version of DD decadeS to punch through a mile thick wall of granite.
__________________
"I am tired of Earth. These people.
I am tired of being caught in the tangle of their lives."