I had a 2009 Scott Contessa Speedster that had a frame defect (cracked head tube) and had to be warrantied. The replacement frame is a Scott Speedster Limited, which is a 'men's' frame. According to my LBS, there is absolutely no difference in the two frames besides the paint job. They said that Scott doesn't use a women's specific geometry for their frames - the WSD is all in the paint and components.
If you do end up buying the Contessa or any other Speedster bike, make sure you check the head tube really well. Depending on the year of the frame, there were whole production runs that had the frame defect that mine had.
2010 Scott Speedster Limited/Bontrager Inform RL
2008 Cannondale Rush 2 Feminine/Terry Butterfly
2005 Cannondale F400/Terry Butterfly