Yeah man... It's so dumb that every weapon in the entire game is so overpowered. Why can't they balance all of the equally overpowered guns so that they all are about as strong. It's unfair that I can use {weapon} to damage {enemy}. Why can't Dust be like {game} where {weapon} does nothing to {enemy}.

You seem to be missing the point of the post. I shall enlighten you. The point is that, yes, the weapons do damage. Some are better in some circumstances, some are better in others. Some weapons beat some things, some beat others. I'm a gamer that comes from a very specific kind of shooter. I played a lot of Metal Gear Online (may those servers rest in piece) where every single gun was an instant kill/tranq when you got a headshot while inside the gun's effective range. Dust seems to be a suitable replacement for that environment. The weapons are powerful, but will fizzle out when in the wrong hands or used improperly. If you have enough situational awareness and skill you can get around anyone using any gun. Teamwork makes this possible. Run the distraction game with a heavy and a Logi while your Shotgun Scout creeps up behind them. Move to another objective to force them to move into another playing field, etc. If you use your head you can get around any enemy with any weapon. Teamwork is what makes or breaks this game.