Why do US universities have a retarded admission system?

No.10910062 ViewReplyOriginalReport
Admission into Chinese universities is solely based on a national exam. If you get a high score on the exam, then you will automatically get admitted into a top university. But admission into US universities is based on a combination of random bullshit like high school GPA, SAT/ACT scores, extracurricular activities, diversity, essays, and recommendation letters.