Aside from being quite offtopic I think you have misconcemptions about ww2
The upgunned and uparmored Panzer 4 costed exactly the same as the basic Sherman, Ez8 costed only 10 thousand US dollars less than Panther G, the most expensive one.
http://knowledgeglue.com/cost-ww2-vehicles/
I don't know where i exactly implied it shouldn't handle P4.
lol you said that the game version has higher penetration than that it should. That implies that it will struggle even more vs a panzer 4

If they costed the same why the american tanks came in much larger numbers? lol
Check the chieftain videos, you will understand what misconceptions im talking about