From what I've seen from the armor so far it looks like Bungie is going at it accurately. I've seen posts from people who have a hard time distinguishing the female characters, probably because their looking for boobs. But the thing is the armor is keeping them from being prevalent, I can tell by the frame since I can't distinguish by face. The male titan is pretty big, the female Titan is foreboding yet somewhat elegant at the same time. Male Hunters look cool but the females look more agile and graceful. Warlocks... I can tell but I have no real quality to compare other than purely the frame when there's that much cloth, the females a visibly slimmer though.