Just my usual two cent to any topic.

The reason some groups melts some not, is because not everyone is "good". Plus there's DNC and MCH that are two span over other classes in terms of AoE with SHB. With MCH being overly broken rn (At least to me main MCH). If your group had non-aoe centered classes and/or casuls obvsly it will take more than having two good AoE centered classes that knows which buttons to press. There's some run of "the burn" I went as tank that lasted more than 30min, to farm that chest for glamour. Mainly because dps classes couldnt handle a kb/controller. But I didn't made a post on how the burn was overtuned.