Currently progressing on T13. From all clears I've seen, PLD is being used as MT. However, looking at the damage intervals in the first 50% of the boss's HP, it's roughly 50s between each Flatten, give or take depending on push timings. WAR could easily IB every single one and have IB up twice for one Flatten > 4 breaths and Vengeance another, and after that it's basically just Flatten + breath per Flatten.

Thoughts on this? Preferences? From my perspective:

Pros/cons of WAR MT:

+ More damage (especially with NIN in the party) for both MT and OT
+ Every hit gets easy, predictable mitigation, with up to 3 Vengeances of the 5/6 Flattens in first half
+ Holmgang can be used twice and still be up for add phase if needed

- PLD can block Flatten
- PLD can use HG and not only nullify a Flatten > 4 breaths, but doesn't require excessive healing to pick him up
- WAR is better at picking up the Wyverns and stance dancing, though it should be roughly as simple for PLD to establish aggro
- If WAR has to apply Storm's Path as MT, which in current gear we do, and there's no NIN in the party, the DPS increase is diminished greatly

Thoughts and/or experiences with the turn with WAR MT? We've run into situations where we're relying on Bulwark as a CD for a later Flatten which is not consistent. Also, I'd like to think the first world clears used PLD as MT primarily because it's more consistent and not because it's flat out better.