Winners = AR
Pro Aim Guys = Sniper
Better feel & close range over versatility = SMG
Mentally Ill = Carbine(loses so badly statistically, you really have to play it a certain way just to have a chance.)
Cool Guys = Shotgun
SMG kills slightly faster against 25-75 armor, but it's spread is basically 3x the AR's so it's only better close range, as it should be. The current AR is the exact same as 1104 mostly. A little less kickback and way less spread. Kill at all ranges & ridiculous rifle sprinting. As long as AR players keep their distance, they have an advantage if it comes down to equal aim and armor. SMG is better close range...sometimes.
Carbine's pierce is down to 40 in svn right now. 59+ armor basically erases it's chance of winning in a head to head straight up fight. And with 66% accuracy(hack much?) vs 59+ armor, it'll take over 2000ms to kill, vs. full autos 720 ms...1000ishms with some missing from them. Each extra miss with the carbine is a huge punishment of 720ms. It is also statistically possible for a full auto to frag a carbiner before the second shot can even be shot in unarmored battles.