General Zod
TGT Addict
Most couples I've trained (handguns), the woman shoots better than her male partner. Not always, but way more than half.
In addition to the above points, with which I strongly agree, I have a theory on another possible factor:
As we know, poor trigger control is the bane of accuracy. Also, women generally have less grip strength than men. My theory is that a woman with imperfect trigger technique doesn't push the barrel as far off target as a man would due to their lower grip strength.
Women seem to typically have better hand/eye coordination than men. We're good at brute force, they're good at detail work. There's substantial overlap, of course, and it's not as if men can't do precision work, but lining the sights up and keeping them there is more intuitive for women.