Yes, but at least with the Japanese woman being used in this context, the vast majority of them are relatively flat-bottomed. They just are, there's nothing weird, racist or abnormal about it. Kind of the same way that I was able to point out (successfully) the Japanese tourists I saw in Turkey. I could pikc them out simply by the way they walked and stood.
There are some things that are unique to people from a mono-cultural country (ie: China, Japan, Greece, Turkey) where there is not a lot of mixing and melting pot ideology going on (ie: Canada, USA, England). So there you go! Although I agree with The Envoy, there are exceptions to every rule.