I can see the frustration but CA enemies aren't meant to complety replace human players. Throwing knifes and the Commando have a significantly different dropoff than other Scout weapons (mainly bolt-actions) and shotguns (due to pellet spread and the sniper bullet actimg just like a normal, non supressed sniper). CA enemies also have more health further compounding your problem.
If I remember correctly, the Commando did a pretty good job at picking enemies off while still allowing you to remain unnoticed in sgory mode so it is weird that enemies can auto detect you in this mode (which just happens in Combined Arms for all weapons).
This weapon is a Frankenstein's monster of multiple weapons and I believe it uses modified pistol rounds, not your average rounds
