Picasso  - Seated Bather
It's generally accepted that unity is one of the hallmarks of great art. This includes unity between subject and execution. Which is why it's pretty safe to say that most of Picasso's cubist nudes are doubtful, if not worse.
The image of the naked woman is probably the most common icon in Western art. For good reasons, history has standardized certain conventions in portraying the naked woman. These conventions are based both on certain ideals of beauty and on certain realities of the female body, at least as it is perceived by the (often male) artists and customers.
The image is supposed to emphasize smoothly continuous curves, not sharp borders. At the risk of pointing out the obvious: continuous curves are indeed more characteristic of women's bodies than they are of men's.
The icon of the woman is supposed to represent her as occupying a well defined, continuous volume. Indeed, that is how men usually imagine women.
In short, Picasso has sacrificed beauty to novelty. This is usually dangerous. Where the icon itself is so closely associated with an ideal of beauty, it is even more so.

Spaces, not commas, please!