It's not unambiguous because it doesn't take into consideration other factors. SAT scores are the only variable mentioned in your article, but they're not the only variable in whether a college accepts a student. They've become a less and less important factor over time.

At some colleges, a low SAT score would prevent you from being admitted by a high SAT score wouldn't increase your chance of getting in. Colleges value GPA, class ranking, letters of recommendation, sports participation, extra-curricular activities, personal essay etc etc. It is possible that Asians have done worse on those other areas and aren't getting screwed by quotas or affirmative action.