I mean for the full models not just the face.
Even when we consider the faces, they look kind of stiffy. Just look at the beginning, the tanker, when Snake just landed, before/after(?) a codec with Octacon, it shows a close up of Snake face, before panning away. Looks weird imo. I duno, but it just look dead(?).
But the lack of sufficient character polygons is more worrying. Makes them look "blocky" when you see them upclose and moving about. Especially when you have those little arms/limp actions. Snake normal ingame moving model/animations, viewed from normal camera situation, are fine it has to be said.
I hope they can somehow find some powers of PS2 and bump up the polypounds, at least for the cutscenes. 8)