Part 2:
The only thing setting us apart from Zenos was that the WoL had people that cared about them.
And this continues into EW. EW is about standing with others to forge past despair to achieve a spark of hope and happiness, Zenos pursues his own hope, but forsakes that which would give him what he wants. resulting in despair. It's something the character comes to acknowledge, and accept as the story nears it's end. He muses on this, and actually develops as a character while still maintaining his core. Even Zenos accepted that which the main characters speak about. He decides to take into account what Alisaie said to him, and helps someone else, with no attachments, no expectation that he will force the WoL into doing what he wants.
He cordially goes through Sharlayan customs, gorges on the Mothercrystal, appears to help us, and when that's done, offers to let us leave if we so wish. And he finally reaches that hope he had been chasing, as his soul burns out alongside ours.
I think it's a beautiful end to one of the most entertaining characters in this game.
Also i think people are a bit too strung up on powerscaling, it's just kind of unfun after a while. But Zenos' power imho is fairly well explained all things considered. Garlean trained from birth > Aether powered swords > Resonant > Shinryu > Ascian powers > Souls of the slain > The Mothercrystal > Dynamis dimension.
Thank you for listening, have a nice morning.xoxo