Vladi,
excellent, thanks for the comparison shot.
Comparing the two (although the Vietnamese is semi crouched) comparing the legs, arms, general build (torso), it can be seen that the the VC is sculpted to Asian male sizes of that period, rather then sculpted to '54mm' size.
It also speaks to the sculptors courage that he will willingly compare the two figures side by side. Many would not have posted such a picture, I applaud your integrity
Vladi, I could see how the US figures are part way through a patrol, as the Vietnamese figures move along to ambush positions just out of sight of the patrol.
Excellent sculpting.
Cheers