I always thought something was off about those two weapons. Now I know why. It's been ages since I played FFIII tho so I never would have picked up on it.
It should be changed imo but, I doubt they will.
I agree with the elements part of what you're saying Velox, but FF games are well known for using the same weapons from previous games, why they decided to switch up FFIII's Omnirod/Elder Staff in FFXIV? Who knows. I just hope they don't do anything else stupid like make the Masamune a spear or the Excalibur a WHM wand.