Spells: damage shields doing reduced damage in pvp

[Lasher]

Proof is useful when you are trying to argue something that goes against the accepted and when there is proof to actually find. To my knowledge how damage shield work on live was never altered so my attempt to find anything that indicate how it exactly works was futile. I found patch notes about duration being increased or damage shield being added and removed from druid buff but nothing pertinent that states that ds does or does not do 66% dmg in pvp