It isn't the point of diversity to accept worse results as some kind of sacrifice in the name of fighting past wrongs (and sacrifices don't right wrongs anyway).
Diversity means we play to everyone's strengths and incorporate viewpoints and needs different from our own; by doing that, we achieve more than a homogeneous group could. By including and empowering everyone, we get the benefit of everyone's contribution.
It's not about comparing oppression or letting people take revenge.