I'm actually wearing womens cut jeans precisely because they are cut differently from mens jeans. Mens jeans are pretty much all cut for tall and slim. For those of us who aren't tall and slim then by the time you get the waist right then its wrong everywhere else.
Womens jeans are much better for finding a wider fit and some stores stocking womens jeans will have a wide range of different fits.
For men two minor drawbacks to womens jeans are a short zipper and smaller/higher back pockets.
Anyway they are different.