There is. Stuff dies faster. Duh.

All of the classes have an AoE that is best when used on more than 3-4 targets. Stuff dies much faster so long as the tank can hold threat and not get hit by telegraphs, and the healer does the job right (Both geared enough, of course). Hell, even the occasional Holy/Shadowflare and Bane makes it even faster. Monk and Lancer, as many people like to disregard, actually do pretty damn well in AoE provided they know what they are doing.

Tldr: Get people that know what they're doing.