Actually looking at WAR AF most of the pieces are on par defense wise with PLD's AF. I'm kinda shocked considering all the crit/enmity/damage bonuses that are attached to the gear as well. I was under the impression when they developed WAR it was supposed to be more of an HP/DPS tank not a job that could do that and compete somewhat defensibly with PLD, WAR should at least have to sacrifice DPS in some way to be on par defensively. Or maybe reverse roles and give PLD a way to sacrifice defense to up DPS significantly so they can at least be in a more flexible role when not tanking.