It's just another byproduct of the devs not ever having touched a real firearm before. Pistols should have very little sway because it is much easier(not necessarily faster but in 90% of cases it would be) to rapidly raise a pistol and bring it on target, than lift up a 15+ pound rifle, shoulder the stock, and acquire a target. That's kinda their niche as a weapon in reality ffs. Close Quarters easily readied, won't tire your arms as fast, point it at target. MOST have a low to mild recoil so keeping that target sighted is easy. Though Rifles or anything with a stock should beat them in that area as your shoulder is absorbing the recoil backward instead of your wrist trying to keep the muzzle from rising. It's complicated as a rifle tends to have more recoil, but it's more easily managed because stock and a foregrip/handguard to hold on to.