Idk if you know the news then, WAR inner release is going to be a 60s coldown now with 3 fellcleaves + beyblade hunga attack as finisher perfect to sync with all the raid buffs any time, yeah the guaranteed crit stuff sucks but at the same time now you have 3 fell cleaves instead of 5 so primal rend since doesn't consume inner release stacks and nascent chaos can be fitted on chain stratagem more easily and get beneficts from it.
On the down time WAR still have to manage storm eye wich adds GCD variety, have upheaval every 30s, have infuriate wich not all are going to fit on burst windows and onslaugh is 3 charges vs other tanks that have 2 so WAR is still the most movile job on the role since the recast will make you have at least 1 onslaught free for that purpose since it wont fit on raid buffs anyway.
DRK is based on use all his stuff on raid buffs, all his MP and all his oGCD since plunge, abysal drain, carve and spit, shadowbringer, living shadow, blood weapon and Delirium have a 60s recast (living dead 120 but fit in the same each window) DRK spend his downtime doing absolutely nothing but soul eater an a ocasional bloodspiller and the why this still exist salted earth every 90s.
considering that DRK doesn't have mechanics to build on with the exception of get the dark arts proc from TBN 1 per 60s since the rest is use on recast and throw all your MP on raid buffs DRK is just all lights and sparkles while in reality you spend most of the time watching netflix until your "random shit go" window come, optimal DRK just sucks.
Im not going in to speed skills since is not a matter of raw numbers but more about job gampelay design.