Sturmgeschütz III Ausf. G (StuG IIIG) was based on the Panzer pzkpfw III chassis. The G model was the last of the SutG III versions, and was the most common version of the StuG III. Later models had side skirt armor to protect the bogie wheels. Also a second machine gun was added to later models. Originally conceived as an infantry support vehicle, it was often used against tanks as a tank destroyer, which was poor use of the vehicle as the entire tank had to turn to face opponents. Four StuG IIIs could be made for one Tiger I tank. You do the math.