I've gotta agree with Mashashi and Cassandaria. Plus (IMO), I always thought PLD was more designed for damage mitigation. CoS & the combo are your main hate generations. But, I'd think the goal was that PLD tanking would be more in order (single target move down the line) versus AoEs everywhere (whereas WAR is designed for that with Overpower).

But eh, I have a i90 WAR and a 31 PLD for a reason I spose (dat WAR helmet).