The game's PvP is designed for people who grind endlessly for gear which then makes them invincible against anybody below their gear level. Also the game has no class balance at all in PvP. And it's only 4v4 arena which is where class balance is most obvious.

If I want to play a terrible unbalanced PvP game I'll go back to Tera. Fortunately this game gives me lots of PvE stuff to do, so no one should be surprised most people are ignoring this game's PvP.