dont forgeth about tank without grit/shield/defiance, one of the biggest adventage against WAR are grit and shield oath when maintanking ofering better pasive mitigation at the cost of little dps compared to defiance, PLD and DRK change betwen stances without losing much dps compared to WAR, but thanks to the agresive tanking meta making splayers call you to tank without it or you are not good, this give WAR a huge adventage against DRK and PLD apart they natural raid utility.

if for maintaking you have to keep up you tank stance yes or yes fights with multiple tank swaps you can take more adventage form a DRK/PLD comb forcing WAR to dealt with they limitations something they never are doing now bcs they can avoid it so easily, stills storm eye is so damm good a SAM with slashing debuff or how knows meaby WAR loosing the effect to give it to SAM, anything can happen.