I think everything is a factor in the beta test selection process. The broader the group and the more testers you are able to get, the better your feedback will be.
So no, women probably won't get higher priority but I do expect to see a balanced amount of people who are male vs. female, have plenty of time vs. have very little time, etc. This becomes more important if you are trying to attract new and old MMO players alike. It also makes great census information that they will probably not release to the public. Pulling names out of a hat is a really bad business practice in this day and age.
I'm sure SE is confident that it will attract FFXI players and (IMO) it would be silly not to make your beta selection process even slightly biased towards the audience you hope to attract instead of the ones you know you will if you have to.