Equality of opportunity is essential but we must have unequal outcomes.
It's not that we have to have unequal outcomes, but they are simply a natural product of having a system that rewards people differently. And that is fine.
But even equal opportunity is not really equal. What that means is that from a policy perspective, the rules should be the same across the board for everybody. But this does not make opportunity equal for everybody. Joe Biden's son was given immense opportunity by the sheer luck of being born into his family. The same with Trump's kids. They didn't do anything to deserve that. It simply fell on their lap, and so did a world of opportunities that we don't have. But all we can do is to ensure that at a minimum the laws are the same of everybody.