WAR does not do enough damage to keep using that as a means to justify their tanking state. I have both WAR/PLD Relic'd with a mix of Allagan/Myth gear and my PLD is usually putting out more damage than my WAR. Once you have geared DPS with Relic +1 you really can't use Maim/Storm's Eye till late fight since they will snag aggro off you during your zero extra enmity rotation. For AK farming I can run PLD in Sword Oath the whole time, speeding up runs to 22-26m, but WAR I have to use Defiance I have only a bit more HP than my PLD without it and still take some big spike hits during 3 trash pulls. Holmgang does not work on bosses, works on Dullahans in AK which is fun, Stun them, wait till stun is about to wear off and Holmgang while behind them so they can't turn around, can take zero damage during the fight XD
