User blog comment:Dragon-Fox 7/Character Sheet/@comment-27775853-20161010053334/@comment-4867780-20161010060038

John has limitless potential but is a more progressive kind of character (just like humans are), unlike Doomsday and the Fury who are just mindless killing machines.

On the other hand, he can temporarily brings superior opponents to his level, or on the contrary improve his own to match theirs. So he can still fight them on equal ground with good chances of victory, and use the experience gained during the battle to permanently improve hilmself (learning/training).