[aResponder51]

My response lacks rigor, but, the linked studies may give some insight into your first point. As to the second, third, and fourth... really, as much as I'd like to say I'm all for supporting women, it's midnight and I have some stuff to do before bed tonight. You sound like you're interested in the topic though, maybe you have a few hours and are interested in furthering equality? (No snark, real analysis like what you're doing is hard to come by)

from the NSF study: Female CS grads in 2012: 8,730 Male CS grads in 2012: 39,230

from the ACS study: Women's respresentation ... remains significantly underrepresented in engineering and computer occupations ... which make up more than 80 percent of all STEM employment.