Well of course it is biased, just like racial i.q. studies. It is not based on the capability of the person (women) in general. But rather it's based upon the average women in that field. Besides it all depends on the persons interest, commitment, and passion. To be truth full if you had 100 men and 100 women who were all just as passionate about physics I'm sure it would be about dead even in their capabilities other than the fact women have better communication skills and work together better. :p
Live every day as if already dead, that way you're not disappointed when you are. 
