Forgot to mention the figures pose:

V3:
Neck Bend -4°
Chest Bend 2°
Abdomen Bend 2°
rButtock Twist -3° / rButtock Side-Side 1° / rButtock Bend 1°
rThigh Twist -3° / rThigh Side-Side 0.5° / rThigh Bend -2°
rShin Bend 3°
rFoot Twist -2° / rFoot Side-Side -2° / rFoot Bend -3°
rToe Twist -1° / rToe Bend 5°

V4:
rFoot Bend -24°

What is not listed here is set to zero. Same for left side.
V3 is somewhat posed to achieve a Pose similar to that of V4 with bent feet only.

BTW, I get the same heights as stated before if importing the figures to I-DEAS.
In both apps the height was determined by measuring the distance between the farthest antipodes of the objects.
e.g. the distance between feet sole and highest point of the skull. There was no applied weight of the figure nor any other physical pressures.

Quote - .... ummm... Us foot or international?
[ducking and running]---------------------------->

I used the international foot (304.8mm) and inch (25.4mm) for conversion as you would see if you look at the results. The US survey foot defined as 1200/3937 m is to regional limited for this purpose. OTOH, the ~610nm difference are in Poser only relevant if figure or prop dimensions exceed 10^6 ft.