Depends on how dull the other candidates are personality-wise, though, too. And that is speaking for any race. Anyone can be an overachiever on paper but for some of these overachievers, when you sit down and try to converse with them, it’s like trying to breathe underwater. There is a little thing called personality that may define a person more so than a long list of trumped up accomplishments.
There are a wide array of factors going into admissions decisions. No “grouping” is homogeneous so you can’t, as you say, group all Asians and pit their academics against each other. There is far more to it than ethnicity and grades/test score.