Correct you are. Still, there were a fair amount of German aces that racked up some serious kill totals against the western allies.
Marseille got most of his kills in North Africa, against US and Brit fighters..he died there, too....I think he holds the record for most kills in a day, over 5 separate sorties, if my memory serves.
I think Gunther Rall, who had 302 killes (I think) got most of them against the West...(should go back and check my memory... :))
Walther Novotny was another who had alot of kills against US and British targets....he died in air combat flying the ME-262 in early 1945
I remember watching The show The 20th Century showing how they took out the ME-262`s,just wait till they ran low on fuel and have to land...then shoot `em down