Comparing the 52cm models, the mens and womens appear to be identical. The Women's frame comes in sizes all the way down to 44 and only goes up to 56, whereas men's are available from 49 to 61...

Weird. They used to shorten the top tube a little on the women's bikes, at least when we bought my wife's bike 8 years ago. "Pink it and shrink it" for the win!