[PlasmaKrab]

Talking about lethality ratings, short-range SP SAMs are quite another matter than NANPADS, since several of them use hybrid Frag-HEAT warheads (Roland, Rb.70) or even contact APHE (HE with delay fuse, see the ominous Starstreak or the Rapier IIRC). These ones are harder to model, since they should get a nearly-ATGM-like HE penetration, which would be no end of overkill against aircrafts that rarely get more than 3 points of armor. I think the game allows for such missiles to get a HEAT penetration value and HEAT ammo for use against ground armor targets. That's supposed to be used only in those dual-purpose missile systems that have a real ground targetting ability, like the ADATS.