We don't really go through "less changes", either, unless you want to talk about something with a much lower rate of reproduction than something else - because a species changes, if only a little, from generation to generation. If we want to quantify being evolved in that way, humans would be much less evolved than, say, houseflies.
And no, your supermen really couldn't, not unless you changed their biology so that they aren't really human in the first place. Their metabolism and effective lower body temperature would mean they don't have as much energy, which would make them comparatively lethargic and still less capable of survival anyway.







