Women have been locked out of many professions because of sexism for many hundreds of years. Women were, in the very recent past, barred from top culinary institutes.
The correct answer to your question is "they don't." Just as men don't make better politicians, musicians, painters, business leaders, or pro athletes than women, women are capable of achieving excellence in any field in which institutional sexism doesn't bar them completely. And when women DO achieve, it is often in the face of greater obstacles than men face, *because* we overcome sexism while we're *also* doing the cooking or whatever.