in game all german tankgun's penetration data correspond to the penetration of armorplate at 30degree from vertical in reality. for example 75mm L/43, Pz39A
PCBC 96mm at 100M equal to 112.7mm for vertial armor plate. that means all german tankgun are degraded for game ballance?
I think it is due to no slot is assigned for this unit in deployment area. you can fix it by editing the mission by the missison editor provided by 1C.