I'm not sure I understand the question - no one is saying they aren't both modified versions of the same starting mesh, that's the point of the unimesh so OF COURSE if they're the same mesh they're the same mesh. The point is that M3 isn't "made from" V3, both came from a commone starting point. Given what happened when Steph was released I think we can be pretty sure that if M3 had come before V3, both shaped as now, the latter would have been described as "masculine" and "butch". The eyes are pretty much the same shape, which probably means that since we've all seem umpteen V3 images we get odd flashbacks from the M3 eyes, but apart from the long lash-planes they don't look strongly m or f to me on either figure.