My late friend Eddie Nunes fought both the Germans and Japanese. Italy, DDay, Luzon and Corrigador. He respected the Germans and felt sorry for the Japanese. Tell this to a Marine on Betio or Peleilu and he'd knock you down.
In PTO the Japanese numbered maybe a million, in Russia it was 3 million vs 13 million. At Stalingrad the Germans lost the whole 6th Army, maybe 200,000 men.