[PlasmaKrab]

I have tried to gather enough data to remap the parameters of the whole MANPADS class, and it is true that most of the Russian missiles stand out as having lighter warheads than their contenders (except for the 9M313 Igla-1 in which the fuze is linked to the rocket engine to detonate the remainder of the propellant alongside the warhead, hence the current game ratings probably).
For comparison, here are some of the stats I have come up with (WHS/HEP/HEK):

-Strela-2 to Igla-M: 4/2/3
-Igla-1 & Igla-S: 4/2/5
-Stinger, Mistral, KP-SAM: 5/2/5

I have modelled the HE pen on more conventional HE-frag bases than previously done, but I may have overlooked an official rationale about SAMs having HE penetration proportional to HEK.

About lethality, Suhiir, remember that Afghanistan was a very demanding theater, being at the same time hot, dusty, and high-altitude. In these conditions, the engines and most propulsion systems are stained enough by daily operations, so the least damage to them can get down a helo of aircraft that could otherwise have gone on. Also I wouldn't be surprised of the kill rate had been enlarged (mostly in the beginning of operations) by cases of unexperienced pilots that misjudged the high-altitude piloting mechanics and/or mountainy landscape and turn an evasion maneuver into a head-on crash. Just wondering.

Also remember that the Stinger is top of the scale in accuracy as far as up-to-date versions are concerned (in game as well). In Afghanistan times, even the early Stinger was better than any Soviet MANPADS bar the somewhat rare Igla-1.