I get what you're saying, and I respect your opinion, but it was still such a letdown
I didn't even know he was weak to lightning, I just used lightning and fire on my swords because I expected him to be immune to holy. 2 chars were mimic x-magic users and i chose to use freelancers for other 2. 2 weapon is automatically available for freelancer (once ninja learns it or masters the class, cant remember) so it still left 2 open slots. I just replayed Omega using 2 weapon without lightning sword or x-fight, killed him with 2 double cast syldra dealing 24k instead (6kx2 with 2 casters)