I think War is the best at mob pulls personally.

-Nascent flash is crazy
-Two off GCD heals (With one of them having a Convalescence baked in)
-They have by far the best Party wide CD for mobs(IMO the best period)
-Can coordinate with your healer to gain to utilize 5-6 seconds of invulnerability with no cost
-added bonus of Vengeance's secondary effect actually being able to deal significant damage

DRK is still great during wall to wall but it sucks to not have an invulnerability to fall back on and Abyssal drain is meh compared to how it used to be.

Also Aurora is a great CD WTF?