[Yark]

The cool thing about strong PvP builds is that anyone can use them. As Noxid said, when you have more than one person responsible for support and/or healing, you really lose steam in the way of dealing sufficient damage. If you encounter a strong strategy employed by an enemy team, you can either build to counter it, or adopt that strategy for yourself.

Having said that, I understand that most people choose their classes and skills based on the role-play of that specific character, meaning that swapping around your build breaks immersion and is unattractive. It makes sense to me, and my advice to those people is to stop picking fights with other players, because you're only going to get upset.