That's a good rule for all women and most Asian girls but I've had the pleasure of some stunning Thai women, so I'd exclude Thai's from that statement. I've also found most Thai women to be far more pleasant than most other Asians.
Oh and I should also mention that two of the most stunning women I've had the pleasure of, have been Chinese or similar, one in Huddersfield and the other in Bradford but both toured (as most do) and the photos were genuine, apart from a little bit of enhancement due to padded bras and/or selective camera angles.