I assume you're talking about frontline? In that case, absolutely, yes, agreed. Don't give all the melee a blanket 60% damage reduction when certain melees have INSANE surivability and can ALSO function super well as a ranged attacker.
All the melees should receive DR according to their kit's defensive capability.

If you mean in CC, I dunno. I don't play the mode, but people apparently think NIN is pretty underpowered there, idk.