I would say that fairness is more important than diversity. Setting different goals for different races is a racism no matter how diverse you could get in the end.

About GPA/SAT: According to Goodhart's Law, "When a measure becomes a target, it ceases to be a good measure." However, a measure is required and should be consistent.

Asians are not born to be good at GPA, American Asians are good at that because the universities admission system and immigrant policy are specifically designed to select students who are good at school. The first generation of Asians in the US are most grad students from foreign countries.