we might find ourselves reaching some very uncomfortable conclusions
Lego Marx and the Gains from Innovation
Sven Palme

Obviously there is no way to do this, in theory or in practice. No matter how you try to get the “right” resolution you’d end up with nonsense, like workers and capitalists benefiting equally from the relation. But that doesn’t mean you throw up your hands. In fact, this is precisely what class analysis is for. You don’t look at the level of individuals, but at the level of class relations. If you are honestly confused about the class relation between Black and white people in America, you can check out this review I wrote about a very very long actual study of that, instead of your guess https://psmag.com/a-future-history-of-the-united-states-2965a114f8ee