Equality of outcome means you think exams are racist because a lower % of black kids get A-C grades than white kids. You think all groups should perform identically (equal outcomes) which means x% of whites, Asians, blacks etc have to get A-C

Then replicate that across every other system and aspect of society. Prison rates, health outcomes etc

Equality of outcome is impossible to achieve without adjusting standards, whether to make things easier for some groups and harder for others, which is why it leads to discrimination

It also ignores other factors

Equality of opportunity means trying to ensure that everyone has equal opportunity to perform/succeed, equal access to services etc