The asian skull is different than caucasian skull. Especially when it comes to males, reducing the size and angularity of the jaw is often times more aestethic for asian men than augmenting. When it comes to females, they want anime-kind of faces: very small chin, small jaws, big eyes, very small nose.
So if you're asian, it could be a smart thing to do to go to asia for surgery. If you're white, I don't know. But it's a good thing if the surgeon understands your phenotype.