My PLD is Lv56. My WAR is Lv50. While I like WAR's playstyle, I have a higher survival rate as PLD for some reason. I do not raid anymore, so I retired my WAR, which is why she still sits at Level 50. As far as threat gain go, yes, WAR's Overpower alone is one move that builds lots of enmity on multiple mobs. PLD has Scorn, but it's timed; Overpower can be spammed as long as you got the TP for it. PLD's Flash can be spammed, but it does zero damage while Overpower does do damage.

Still, I am more comfortable with PLD than WAR.