So the incoming changes to Ruin III

"Potency reduced from 150 to 130. MP cost reduced. The additional effect "No cast time while in Dreadwyrm Trance" has been added."

Ok it's great that the MP cost is reduced and now gets instant cast in DWT. But why nerf the damage? I know that during DWT you get a damage boost, but this is a little disappointing considering literally every caster can use a single target spell for nearly twice that amount of potency (when it goes live).

Surely it could of just stayed at 150 potency?