warmonky - They have been going to lengths to push female characters even though their books don't sell,girls don't read comics. Superman is as strongs as the writer wants to be,many characters vary greatly by whos writing.
it's more that the percentage of readers is still a lot more male, but the female numbers, i would guess are increasing if you look at comicon and include anime. i guess they think it's an untapped market.
still, the majority of male readers don't want to read about female heroes, unless it's pyslocke or elektra probably.