Ikimashou

But why, you say that they are all the same and there is no difference...

You misunderstood... They are the same in the specific example I provided (it wasn't just a random thought). But the race as a whole (especially within one nation, especially within the context of pictures on the internet) is less diverse. That is, they are more similar and have less pronounced unique features.
Because being beautiful and also having distinctive and unusual facial features is more valuable than just being beautiful. And Asian women rarely have that, at least I wouldn't call any of them that.
The picture above is worse than the one you sent precisely because it stands out, but in a negative way. With the nose, eyebrows, etc...