By that rule the ego should come from those with powers to validate it, the Omegas are worlds apart of everything else, mutants included.
And in some cases what's the point of being so powerful if you can't control your powers and you are in danger of destroying yourself and the planet ?
Time Travel has been so abused in the Marvel Universe by so many characters that is no longer something fascinating, just tiresome and the best way to complicate the plot.