The thing though is while a PLD has better defensive CDs, WARs are only marginally more squishy. With their huge HP pool, Rampage crit heals not subjected to interrupts due to movement and damage, not being dependent on a resource which requires another class to refill, I don't see any benefit of bringing a PLD over a WAR outside of situations where you must kite a large number of mobs without coming into melee range. As it stands, a PLD is too much of a niche tank to be preferred over WAR, even with recent changes.