People have to realize that PvP (or world pvp) is not a competitive multiplayer game. It's Red versus Blue and all in between.
High level character versus low level characters, 5 people versus 2 people etc. That is how PvP should work in an MMORPG. When a game is based on stat progression it is stupid to try and make it competitive (aka balanced) because it will never work (and it hasn't) without changing the very fundamentals of the game.