But according to the article, "all" asians have the same profile. If this is true, I can understand why some of the similar profiles are rejected in the name of diversity.
Once an SAT score is sufficiently high, it makes sense to look at other things. I can see why a college would want 50/50 gender, and a wide spread of social backgrounds.
If I was teaching a class and I had to choose between 2 students for the last seat, I might choose the one with the (insignificantly) lower score if that student seemed more fun to be around.