I also have a WSD, a Specialized Dolce. Before trying it I tried the Allez and there was a huge difference. I am 5'2" and I felt that my arm stretch to the handlebars and brakes on the Allez was more then a stretch than I was comfortable with. My legs are in prefect alignment with the crank. I "think" that with a WSD it is more about the upper body reach than the leg length.

The first thought I have when riding my bike is "it fits me like a glove" and I never had that thought with any other bike that I have owned.