Class perks and weapon abilities imbalance PvP heavy. I don't think that class thing your bro was talking about is true but I agree with everything else. I'm a level 24 blade dancer with full perked out class tree and weapons. I melt people who even shoot before me because how my class works and how my weapons are set up. And the blade dancer super is just amazing.
That blade runner super power is absolutely ridiculous. Just unlocked that subclass tho lol