All admissions policies pick winners and losers, that’s the point. A collage which sifts the relative importance of SAT scores vs GPA is picking winners and losers, it’s hardly an argument in favor of any specific policy.

AA increases how much innate talent matters vs some peoples social position. It’s the same outcome as removing legacy admissions, just with a slightly different set of beneficiaries.

Collages have many leavers to get these kinds of outcomes. Favor elite prep schools and suddenly you have a surplus of high income families etc.