I believe female artists have a few advantages over male artists:
1) From the time they are young, they care about making themselves and things around them (their room, their dolls, etc) look pretty, giving them a natural sense of aesthetics.
2) Related to above, they practice putting on makeup from a young age, giving them an early introduction to how colors work together, particularly on skin tones.
3) They literally have better color receptors in their eyes. It's literally almost impossible for them to be color blind, and some of them even have additional cones in their eyes making them even better at seeing color than other women.
4) Women tend to be more emotional/empathetic thinkers. Emotional thinking can lead to more passionate, creative art, whereas Rational thinkers may struggle with this side of art even if they master the technical side of art.
5) It's possible that the first artists were women painting on caves in hunter gatherer societies while the men were out hunting. Plus if you look across the most basic human societies, its usually women making the jewelry and weaving baskets. It's possible that women are just better tuned to fine motor skill tasks due to it being evolutionary hardcoded in them over the course of literally thousands of generations.
Point 5 is admittedly a little more speculative than the others, but the broader point is these advantages give women a better "feel" for what makes appealing art. I've seen it said before, that random teen girls on deviantart who are putting out great stuff claim to have never studied a fundamental in their life yet are pumping out great work, in terms of color, compisition, etc. They naturally just know how to make their work look appealing and pretty.
Of course that doesn't mean EVERY woman is guaranteed to be better than any man at art, it just means they have a huge head start if they do decide to pursue it.