Perhaps, it's that motherly instinct that comes from bitching at everyone to pick their stuff and put everything where it belongs and to stay on task? I know my mom would have been a great project manager...
I would tend to agree. Most women in tech have their shit together. It's a man dominated world, and sometimes we can get caught up in our ideas... whereas women make a list, stay on task and get things done. I've met WAY more kick ass women project managers than I have men. Maybe it's a coincidence, I don't think so. Women are more organized and aren't' afraid to do the worst tasks first.
To paraphrase Stephenson in Cryptonomicon, men can apply a laser focus to something, to the exclusion of everything else, whereas women tend to be able to keep track of the big picture more easily.