Yes, there is ... as the size of a Naval Aviator's watch is in DIRECT INVERSE proportion to the "size" of his "masculinity" ... ergo, there is a pressing need to have a watch "appropriate" w/ your real or perceived "man-hood" prominently displayed on your wrist. Sometimes also considered "compensating" behavior ...
Therefore, it is necessary to have either as LARGE or as small a watch face as possible ... whichever works for YOU.
These rules do not apply to female Aviators ...
You are welcome.
There is a company that does do aviation watches for females- Abingdon. My parents got me their Amelia style as a grad gift and I absolutely love it. I haven't gotten to play with its functions yet (though I start IFS Monday so that may change soon), but it's pretty nifty. It is classy and feminine, I can wear it with pretty much anything, and still does the same thing all the guys watches do, so for any female aviators out there that want to get in on the whole big aviation watch thing I highly recommend these watches.
http://www.abingdonwatches.com/