Is dice working on solving weapon balance?

Weapons that's too OP: TR-7, SCW10, this two weapons are dominant in close range combat, fast rate of fire with just a BTK of 3 , result in a insane ttk around 160ms

while some weapons like UWP40, pw7, SOR556MK2, ak205 has nearly twice the ttk as TR7 and scw10.  Their precision are mostly useless due to map design and poor ttk/btk

and some data of all players from XiaoHeiHe, a very big Chineses social media platform about gaming:

TR7: avg kpm:1.55(the craziest one)

SCW10: avg kpm:1.30

========just look how big the gap is ↑↓==========

UMG40:avg kpm 0.85  (isn't this hilarious?)

pw7a2: avg kpm 0.91

ak205: avg kpm 0.85