PvP class balance

I want to say:
whoever is responsible for the balance of pvp should be ashamed, because this is the most unbalanced version in the past 5 years. Almost all meeles are broken!!!Except for mage and ele, all casters are so weak!!!
If the total amount of damage done by a class that does single-target damage is higher than that done by a class that does triple-target damage, doesn’t that mean the model is broken?