[Juha]

Tony
firstly some general notes
Germany lost the war, so it didn’t develop a war-winning system
We still don’t know what was Rudel’s achievement, we only know what he claimed.
VVS wasn’t very happy with Il-2s with 37mm guns and concluded that large number of small hollow-charge bomblets was more effective antitank weapon than large calibre cannon, so the use of 37mm armed Il-2 was limited.

Personally I think that RAF should have kept some sqns which could have used 40mm Vickers S gun, it was capable to penetrate side and rear armour of all German AFVs but that of Tigers if terrain allowed shallow dive attacks from side and/or from rear. And the gun was very accurate.

Juha