Sounds fair to me. She actually gave me nightmares. Sephiroth didn't. Parasite Eve had the benefit of:
- She could make you spontaneously combust.
- Turn humans or animals, but usually animals, into some horrifying John Carpenters The Thing monster.
- Can turn humans into goo monsters to form a bigger goo monster.
- In the Parisite Eve universe, there's an extra scary benefit. the cells in your body hate you and want nothing to do with you and rather die than be with you. The only reason the mitochondria chooses to work with Aya Brea, is because they do not want to die and rather keep her alive as long as possible. Including make sure that she ages slowly as possible.
I find that more scary and memorable, than super shoulder with a bug up his ass out to destroy humanity, because he has an identity crisis. Understandable sure. And yes, I know Eve wanted to destroy humanity for petty reasons too, but they're not that different. The only difference was Sephiroth wanted to quote" protect the planet and wipe everything out of its misery". Eve just wanted to wipe out humanity, because she considered them weak and mitochondria superior.