I think the design of CoH in particular helps to encourage that sort of 'Ubermensh' mentality of the oft romanticized axis forces.
... UKF and USF exist too.
That quote is so American Propaganda...
Two facts:
First. Its always harder to push into enemy lines. Somehow germans in WW2 did that with excellence thanks to strategy and after that in late ww2 americans and soviets had it really hard to push into german lines. Even though german had a lot of logistic complications.
Second. People. In both wars there were rookies and veterans in the same battlefield with the only trait that late ww2 germans were defending its native country. Yankees and Brits were just invading other country and after getting wouded they could come back to their countries. Germans did not had that luxury, hence many of them did fight like fanatics and gave the most of their will to the remaining soldiers.
Plus point. Na-i political agenda tried to inspire combat troops into superiority ideals to push them into epic battles and fanatism. Its not like they were really superior, but only they had an edge in engineering technology. It was meant to push the top of sinergy of men and weapon.
Edit: Game is not historically based and mentality is about what history was. Two different things