Just because there are 3 or so overpowered/overused guns in the game, doesn't mean the game is broken or needs to be fixed.

By all means request a nerf for the guns. Thats would be a better phrase.

Some guns are just better then other ones, this is also in real life, the guns you talk about are good and easy to adapt, but close range mp7 vs acr the mp7 wins. A type 95 is a great gun ass wel, but you need to learn to play with it, if you master this gun its better then the acr.

And next to that if you think a gun is superior just play with it, problem solved !