But he speaks the truth. There wont be a balance unless all class do exactly the same thing. If they do exactly the same thing then there is no need for more than 1 class.
That is why right now a lot more mmos are adopting the 1 class that can learn all abilities in game its whatever way you choose to spec your character that changes the balance.
AOC there is never going to be a balance in pvp ever, its 5 years too late.
You have classes like ranger, that does insane burst dps and have better survivability than most other classes. Then you have a healer class pom that has nearly every single CC in game, and a fear that has NO cool down practically. You also have class like tanks who get best armor, more health and decent dps.
its just imbalance after imbalance.