Unless you have a blue post saying they wanted to nerf it for both PvE and PvP I am going to continue to argue my point. Which is the way it was nerfed and how clearly shows it was intended way more for PvP than it was for PvE. The fact you keep bring up "blizzard has the ability" is irrelevant because a lot of nerfs classes have gotten since the launch of this expansion screamed "Lazily done" from the get go.
Blizzard having the ability to nerf based on specific content is not up for debate here. Things being done in a lazy way or little to no thought process behind it is.
If you are going to ask for me to explain something just to throw it aside then do not ask at all.