PLD+20% DR has the Same Effect as WAR+25% HP.
So if a boss hits the tank for 2k Damge
7.5k HP WAR - 2k = 5.5k (73% HP Left)
Equally geared PLD will have 6k Health -1600 (20%mitgated) = 4400 (73% HP Left)
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While I generally agree with OMega they are basically equal.
I know I can barely survive a DS and an auto attack with no buffs of any kind that would kill my PLD partner
Well, actually.. After the IB changes I can see that for one specific burst event, the WAR is going to have the same 20% DR as PLD, plus 25% more health and the healing boost to recover. PLD can stack buffs and reduce damage by a much greater amount, but no good PLD is gonna blow all CDs at once.