Not enough women in science?

Are women underrepresented in science?  My philosophy professor was complaining that since half of all B.Sc. grads are females, it doesn't make any sense that there are so few female science professors.  Personally, I don't see what the problem is.  It's not like scientific progress is being impeded by gender inequality.

>>10
I'm going to filter out all your worthless verbiage here.

a 17-18 year old population finding a difference of 3.63 points

I claimed a 5 point gap in adulthood (or if you want to be a pedant, I'm talking about people in their 20s at least), and was quoting Richard Lynn. (Lynn, R. and Irwing, P. (2004) Sex differences on the Progressive Matrices: a meta-analysis. Intelligence, 32, 481-498.)

Men may average slightly higher, but more of them score lower than higher.

What? Men average higher and score more often at lower AND higher ends.  

Men and women perform equally in mathematics

Looking at math SAT scores, I wouldn't think so.
http://www.infoplease.com/ipa/A0883611.html
You admit men score more often in the higher range anyway, which is what is important to topic (since the OP asked about professors, not the average person). 

men account for more of the highest and lowest scores

Did you just contradict yourself? 

men are better at spatial relations and reaction times, women are better at memory recall and have an advantage in concept and numeric modality (manipulation/critical thinking)

This might be true (you will have to provide a source), but I'm not familiar with these sub-categories of intelligence (numeric modality?). I do know however that the more g-loaded a test is, the higher men score on it.