DRK zerging is far from dead, I'd say. There are still a number of targets outside Abyssea where a DRK zerg is still optimum. Dynamis Lord, Kirin, Vrtra, and Bahamut v2 all come to mind, and of course you can always find more.
Inside Abyssea, it's really the same deal except the NEED for zerging is greatly diminished. There are of course some exceptional targets for zerging (Smok, Bukhis), but they can also be killed with more standard setups with little to no difficulty. It also eliminates the hassle of having people leave the zone to get on zerg jobs, and thus losing lights, and also hindering your alliance should you end up doing anything else while inside (some people may need to change again).
Quetzalcoatl.Volkom said:
Point of the question is, would a zerging Drk with the best gear outdo decent-best geared samurai/warriors? or will it fall short?
The answer to this question is sort of misleading, because it solely depends on the target in question, and the duration of the battle. Obviously a DRK zerg is only good so long as Blood Weapon is active and can be active. Meaning you only get 30 seconds on no undead targets. Would your zerg DRK deal more damage in that 30 second window than a standard SAM or WAR? Most likely. Secondary, it greatly affects the dmg output based on how well set up you are... gear choices and what buffs you receive prior to zerging.
Assuming the same buffs and a well-focused target, DRK will still come out on top. But if you're not going to receive six soul voiced songs, not going to be hasted, the fight is going to last longer than 30 seconds, etc... then yeah, you'll likely be out-damaged by a different melee.
All in all, the zerg DRK is still very much alive, though just like always has been a niche use tool. Not great for everything, but exceptional when the conditions are right.