The line about savage was here to state that savage require an other mindset with higher optimisation

Like lambda said
In donjon content most of the time you can dps because combat are not intense and mecanic are almost inexistant

And as said even without cleric you can dps
A lazy healer will have 0 dps (maybe more if whm with non miss assize)
An unsure healer should have more or less 250+ dps because he doesn't use cleric
A classic healer will have 800+ with a balanced gameplay

A raid healer will most of the time make dps sweat because of numbers and tank tighten their pant with life drop to the extrême XD
(Yolodiction at the last second while in cleric yay !)