For funsies to try and solo the Gladiator enemy in Halatali Hard, I did a run as WAR before, then PLD next. The only difference between them right now is my WAR has Zenith and 90 head gear, PLD is the same otherwise plus Shield of course. I noticed I was having some hate issues with the Dragoon on the team, and I mean, I start a fight, Flash three times, with Shield Oath, start making my rotations, and something was already going after him. My PLD is item level 89, that's not awful, and a DRG with near similar gear as me was pulling off extremely easy, same with the Bard in the party. I emptied MP several times trying to hold and kept losing it anyways, RoH combos were barely affecting my enmity, only if I was wailing on something for a minute or so with no one else, like the final bosses when you tank the caster and the creature who's race I can't remember right now, was Enmity being maintained.

If something wanted to convince me to stay on WAR it certainly has now.