I understand your reasoning but I think the entire reason for women's character models being over exaggerated (more like in the case of Mass Effect than that chick in a tin can) is that game developer's want you to be able to connect with your character, and in some cases for other people to be able to differentiate between genders on the fly. The best example I can think of off the top of my head is that one of my friends is constantly gaming but the way most people describe her voice is something around "like a 8 year old boy's". Most people that she ran into in Halo 3 and CoD think she's a little boy but the character models in Halo Reach, and 4 sometimes help people connect the voice with the appropriate gender.