Since RDM has rez utility the SE devs punish it with 10% less dmg than a BLM.
I think RDM should do equal damage to BLM in a fight where it does not do any rezzing.
My proposed whack idea is every time an RDM uses a rez the RDM receives a 25% damage down.
This same logic can be applied to SMN also. The res DPS maintain their versatility but are not punished for it in high-end content.