Status Updates From La svastica sul sole

Already a couple times the Japanese conquerors of the West Coast have been described as more humane than the German conquerors of the East Coast, and I understand this is fiction, but the reasoning seems strangely ahistorical. Yes, Nazi Germans made exterminating many non-Germans a key part of their mission. But I'm sure at Dick's time it was also known how barbaric the Japanese had been to the Chinese, & in warfare.