"She noted that she is only the 63rd black woman in American history to get a Ph.D. in physics — a degree that has been awarded to tens of thousands of researchers. That's no accident, she said."

Please also note that no chimpanzee or dolphin has ever earned a PhD in Physics either. So what do you take away from that fact? That we discriminate against them?

I think you're hung up on a false article of faith: that all humans are absolutely equal in all ways. Are all graphics equal? Is the cartoon "Diamond Lil" equal to Vermeer's "Girl with a Pearl Earring"? Answer: only in the sense that they are all graphic works. Equal does not mean identical. Common sense demands recognition of the following:

<i>That that is, IS! That that is not, IS NOT! That that is, is NOT that that is not, and that that IS NOT, is not that that is.</i> PERIOD. 

Stop equating the two. "All men are created equal" does not mean that all men have blue eyes and equally long male "equipment".