Indeed. I've said it before, there are 15 groups of muscles that animate our facial expressions, an evolution required for a social species like ours. The realistic combination of expressions is in thousands. 3D programs, like DAZ/Poser simplify the facials to maximum 3 ..4 movements in those muscles, producing a few cardboard alterations like FEAR, SURPRISED, SAD.
AI, on the other hands, draws from millions of images and can produce intermediate shades, with the net result of thousands of individual expressions. Simply no way to compare.