
Originally Posted by
lolwut
Using your definition, replace self-sufficiency with greater efficiency, since we've already assumed both classes will have no tanking ability in your initial descriptions. You're then left with the job that can only deal damage and the job that has the ability to deal the same amount of damage and has additional self healing and hate shedding utility. Drg would still be a lesser burden on the requisite healer and tank for a equal damage return, barring the loss of the pet, if you balanced the damage of the two classes. War fundamentally needs to do more damage than other jobs in order to maintain it's viability.
It rarely favors multi task classes because they are rarely both multi task and best in class. Giving a multi task maximized ability in a single role elevates it above other classes in that role. In an Ein/old Dyna style mass kill event, Blu's with dd output equal to best in class could defeat their targets with greater efficiency than tank/dd/healer group while multi tasking. In a HNM style, they would be maximize their dd role self sufficiently while allowing the tank/healer combo to perform their functions without focusing on keeping them alive/buffed. They have both magical and physical damage, as well as multiple damage types and ranges along with their own debuffs, and can self sc/mb, so their utility should remain consistent across multiple types of battles. While there could still be niche uses for other classes, Blu would be the default damage class.