Guild Wars 2

As the attachment shows, the tallest female is still shorter than the tallest male. My question is; How many clicks on the slider is the difference between the 2? I am trying to make 2 human characters of opposite genders have the same height. Thank you!

In the humans they look darn close in size to me; the guy just has a pointier hair style. Though he is a step closer to the camera, which might have an effect. The difference looks far more pronounced in the two shortest, so the scale might not be linear.