You know, in fairness, human arms aren't raised that way - not without breaking the shoulders. If you try to raise your arms from your sides like that, they don't go much above the shoulder at all. To raise the arms naturally, they need to twist at the shoulder, leaving the armpit facing forward. I would be interested to see how they compare that way.

 

Still, I have to say that SP3 remains a favourite of mine - I always thought that she was the better looking of the 3rd gen family, both in face and with the more natural body shape.