I'm sure others have noticed this. And even in Crysis 2 the Feline had the very same problem but was never addressed. The Feline and the new weapon Typhoon (I think). Are far too powerful. At close to medium range they should NOT be killing people, especially in armor mode, in half a second. The strength of these weapons in comparison to the Assault Rifles and Shotgun need to be taken into account.
What? Do you play with it? Feline, Typhoon svck from Marshall and FV71(foregrip, muzzle). Also Feline better than Typhoon.
Shotgun is imbalanced weapon, you can shot in air with over 9000 accuraty or get one shot and press V to win enemy. I think Shotguns need to nerf. PDW are normal in game.