AON boom is right, everyone is looking at supers themselves and calls sunbreaker OP which is true, in a game of supers only, sunbreaker would always win, but if supers were disabled then sunbreaker would be the worst subclass because almost all its upgrades in its tree are for the super itself, whereas every other class has upgrades towards the class itself.
There's the balance, if you don't see that then you're just blind.
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But pve still makes it one of the best, melting point strength build makes it a boss destroyer