Equal opportunity vs. equal outcome

Here's an excerpt from The Gender Revolution: Uneven and Stalled, a paper from Stanford's Clayman Institute for Gender Research:

Individualism, encompassing a belief in rights to equal opportunity in access to jobs and education in order to express one’s “true self,” promotes a certain kind of gender egalitarianism. ... To be sure, this ideal has been imperfectly realized, but this type of gender egalitarianism has taken hold strongly. But co-occurring with it, somewhat paradoxically, are strong (if tacit) beliefs in gender essentialism — that men and women are innately and fundamentally different in interests and skills. Almost no men and precious few women, even those who believe in “equal opportunity,” have an explicit commitment to undoing gender differentiation for its own sake.