I'll say just 2 things :

my gf has ravaged 100% of the ninjas she has ever met in PvP as a SCH, ever when she got caught totally unaware, and yet she sometimes get ravaged by one tiny lalafellin WAR. Should we nerf WAR for being OP in PvP ? or SCH ?

This game is, whatever your feeling is about the question due to failures in PvP, extremely well balanced for a game not focusing on PvP. It has a balance I haven't even seen in PvP focused games. Try to be a bit better at your job in PvP, try to have a well coordinated team, and you'll see that balance is not the issue.