Very much like the Japanese I'ld say. Having been "praised" by western media for a long time, they seem to have simply internalized it as them being intrinsically superior to other peoples.That Germans are supremacist and racist is not a surprise.
The surprise is that Chinese or Russian people (and others) seems to be surprised by this.
With all the blunders of the Anglo-Saxons in my experience they are far more tolerant and polite than Germans.
And I lived in Germany 4 years, working in German companies. The mindset of “we are superior” seems to be intrinsic to them. It is not that they try to be bad, they simply are like that.