The numbers show DRK is significantly behind WAR and PLD by 150~ dps where they are only 50~ apart so WAR is effectively 200~+ ahead of DRK. As of now that's the biggest issue. DRK, despite everything still isn't a very bad place due to TBN and the number of magic Tankbusters in this patch, o1, o2, o4, and Lakshimi that keep it relevant, however it still feels somewhat lacking in general mitigation. WAR works because not only is it the highest dps, but it can MT easier and has a wider variety of self sufficient short CD defense buffs. That's what it brings.

Interestingly someone I know who does Savage speed runs said DRK/WAR is optimal but I am not sure why, maybe invulns?