I mean, when we say "more damage" we generally just mean total contribution, no? I don't think we particularly care, in terms of metrics, whether it's from giving buffs (rDPS), exploiting buffs (aDPS), or both (cDPS).
Or rather, if someone wants to get through solo content faster as a healer (odd pick, but /shrug), then they'll prefer less come from rDPS and more come from nDPS (base damage), but that's about it.