Again a clueless response.
PvE side of this, yeah these perks helping tanks, helping other players bit lesser. But we're talking about pvp. Just gonna ask 3 question;
Why do you think pvp gear has more(much more for some classes) protection then pve gear?
Do you think it's unbalanced, dealing magic damage vs mitigating physical attacks in pvp?
Which is easier in pvp? Casting spells at your target or trying to hit it with combos?
One last question: Ranged players or melees, which of these would loose more by wearing PvE armor which dont posses any protection?