PLD has a 4th hidden trait that not many people are aware of. Those arguing that PLD needs to take even less dmg need to be enlightened. Allow me.
The first 3 dmg mitigation abilities you all know; Invincible (2 hour, -100% PDT) and Sentinel (-90% PDT with Afv2 feet). and Rampart
But not many people are aware of the 4th passive job trait which trumps all of the above mentioned. Even veterans like Tera, papi and sinus don't know this.
Its called "Suckshit"
-100% DMG taken. Active whenever you enter Abyssea.