BLM DPS

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[BLM vs] all the other class that do the SAME DPS but have some advantage...(SMN, RDM, NIN, RPR, BRD, etc .....)

If you play BLM and do similar or lower damage (yes, even rdps) to a similarly geared RDM or BRD, the issue is probably user error. If you are referring to DPS in fights, perhaps look into your timeline and find places where you can squeeze out more casts, or use a different spell speed you are more comfortable with.

I'd say BLM and SAM can use some help now, but what of RDM and BRD? Those are actually the classes people are ditching now.