Well if we think both utility and pure dps jobs are "balanced", pure dps will provide better dps if healers and tanks play safe and sit in tank stance and healers focus more healing. In normal weekly clear parties healers and tanks are not doing 35 - 40% of group overall dps like speed runners are doing. I dont believe healers and tanks are supposed to do that much damage either based by SE calculations. That's why utility jobs will always shine better than pure dps job.