So... what I'm reading is everyone else's DPS is negligible when they have weakness because they have buffs.

Losing 3 eyes out of 4 from death? You're done after that. You die right before a demi-bahamut window? You mind as well go make a sandwich. You have to resummon the pet, start from zero (hope aetherflow isn't on CD!) with no MP to push damage with Ruin III outside Dread Trance.

Yes. All you bring is damage but keep in mind the jobs I've mentioned deal much, much less damage on weakness from a resulting death because of how their job mechanics work. Their raid utility does not make up for their lack of damage. Their damage is STILL part of the rDPS. Dying on SAM sucks but I get back up and still sustain respectable damage because it's SAM. Dying on SMN before a Demi-Bahamut? I probably shouldn't even be here.