How is the supposed "equality of opportunity" possible given that we are all unique?

I think the idea here, which you seem to be intentionally missing, is that no one should be locked out of a job solely because of their genitalia or the color of their skin. If you really have a problem with that, then perhaps you're not as smart as you say you are, because surely a person with an IQ like yours has no reason to feel threatened by a little competition. ;-)