On Pokemon black-and-white, in all of me and my brother's total games (7), we only got 1 girl starter (Emboar). What is up with that? And just so you know, 7 games in Pokemon black and white for the confused.
The starter Pokemon in the games, when bred, have a much higher chance of hatching a male pokemon and only a 12.5% chance of hatching a female if I remember correctly. I have never gotten a female starter before when starting a game.