Because PLD in Sword Oath is pretty even in DPS when compared to a DRK while taking noticeably less physical damage. They were mostly limited before due to lack of hate forcing them to use Rage of Halone, now they have increased hate & DPS through Shield Swipe moving to oGCD. The reason for not shoving a WAR into the MT slot is obviously that DRK/PLD see a damage bonus where WAR does not. LB building will become more of an issue in future raids where they intend to reduce the success of parties who stack jobs.
