WAR isn't a better tank than PLD. he just deals more damage.

HOWEVER:
Extra stats from Shield, Hallowed Ground, Divine Veil, War Drum, Aoe Flash, Cover, Stoneskin, Cure, Sacred Prism,
Aegis Boon, Outmaneuver, Aoe Rampart AND SUCH!!

Can't be outdone by Collusion and Antagonize (always imo)

And besides, Tank's job aint DPS...