The most is said, but some key point for the downfall of the Germans was in 1944 as the Allies Airforce destroyed the most of the German hydrogenated oil plants and the bombing brought communications to a standstill and supplies could not be moved.
So the Panzer Divisions and mech. troops had no fuel, spare parts and ammunitions, they were limited in their movement, there was no armoured Corps in reseve.
Of what avail is it to have superior officers and tactics but no fuel.
I would wish we had all the hydrogenated oil plants again so all Sheik would live still in an tent