OK, I thought this was simple but I guess not.
For those that dont know, AH does not have every plane or vehicle ever used by both sides, as a result we have to substitute some aircraft or GV's as needed. The Germans had an M3 equivelent so therefore they get to use the M3. Similarly the Sherman, while FAR inferior to the Panzer, must be substituted with it. The Germans had armoured cars, but AH doesnt have them so they get to use the M8. The Germans had Ju52's but AH doesnt have that so they get to used the C47 instead (I know, I know, not in this set, thats a separate issue). Since both the M16 and Osti serve indetical roles (regardless of performance differences) an so they are not ABSOLUTELY necessary to both sides as long as each has one to have some vehicle AA support.
Soulyss chose, in this case where both sides DO have their proper model of AA vehicle, to limit each side to what they actually had. Is that not crysal clear? Who could argue with that except from a point of bias to one side or the other? Why am I having to explain this to people who ALREADY KNOW THE ANSWER[/b]?