Curiously enough, every time I compare to a guy my height, my shoulders are higher, which makes them think I'm in fact taller as they can see their own shoulders but can't see their own head. So my neck must be shorter than average, and probably my head is short for a guy my height. In fact I've measured it and although it has an average length (see pic), my body is 8 heads long instead of the average 7, so yeah it's probably not a matter of short torso but short neck and head.