This is
really premature, but:
View attachment 604753
I think the CM has a "prettier" finish, if that makes sense. Definitely has a more airbrushed look (because it is), but there's only so much complexity you can expect from an airbrush on a mass-produced product. The density of spots is higher on the Prime 1 pieces.
Between the two Prime 1 heads, I just go with the one I can most easily read while squinting. The contrast of the black dots against the brown ones, the lightness of the skin, the degree to which it evokes the look of the film mask:
View attachment 604756
Even blurred, the new 1/3 looks like the closest we've gotten.