That sounds pretty stupid and racist right there. Would you feel the same saying that all black people looked the same?
Japanese are a pretty homogenous race where everyone has black hair, dark brown eyes and pale skin but do you really think they all look the same?
Not quite sure what you are expecting me to say about the differences though. As you can clearly see all the women look different and you wouldn't easily confuse one for the other. The shapes of their faces are different, their skin has different textures.