I dunno, I mean, the earthbound are pretty grungy looking, but that's because they don't have access to the nice stuff. they have to be tough to survive in the frigid cold against all those monsters down there. If anything, the Survivors in the future would be the weakest, from malnourishment and such. I mean, Larubians, for all we know, might actually not be weak at all. There is a difference between being weak and choosing not to fight.