Like the other guy said from Bad Company to Battlefield 4, no other game had better sound design imo.
I'm not talking about the very old days lol.
KF2 to me has a better sound than BF4 on the long run.
http://www.pcgamer.com/killing-floor-2-how-tripwire-aims-to-design-gamings-most-realistic-guns/
Saying the sound sucks lol it's pretty hilarious saying these guys don't know what they're doing people come back to play this game for the guns they make.