Babygirl, I am a U.S. Marine, I'm a pog (Engineer and MSG) But a Marine all the same. I have shot most of the weapons in this game, or their counter-parts. Some of them... and this is crazy. I have even shot them at... PEOPLE! And contrary to your belief, I having witnessed with my own eyes, have seen people catch a 20 round burst of 5.56 from a SAW and get up and run away while bleeding out, because the military uses FULL METAL JACKET BALL AMMUNITION.
We understand, this is a game. There is a certain suspension of belief to be had here since it is FaNtaSy!
Is that all you have to say? "iTs A gAmE" The game is supposed to be BALANCED. Right now, it isn't. By jacking with the Shotgun and the Machine guns they have created a META of SPX and M4A1. We, are giving feedback to FIX what is broken and wrong with what has been presented to us so that the game is enjoyable for those who play it. Because! Like you said, when you are in the killzone of an 120mm HE round, you shouldn't walk away.
My take away from your post here is you are either incredibly dumb, or incredibly young. Which is it?