Are enemy's damage leveled to your HP?
I noticed when I unequip my materia, which removes the HP + 1100% I have on (it's split between 2 materia), my HP goes to about 5000, but with it, its over 60K. Enemies I face do over 7K damage a hit sometimes. Is their damage leveled with my HP, cus if it wasn't for the amteria, I'd get 1 hitted a lot whilst doing missions.