4Gamer Interview with Yoshi-P!

[KarstenS]

"However, we often use zero in the calculation for damage required from healers."

Can we close all the healer DPS threads now?

Not only that. For tank damage they only count the damage dealt by doing the standard emnity rotation.

So we could say, nearly every damage dealer is not bringing the 85-90% of their max DPS on the table, which they are considered to do in the encounter design.