I've watched the old and the "new" trailer 2-3 times now and actually the only difference is the colors. The japanese trailer has waaay higher color saturation, but I think that might be a mistake, as at the same time a lot of the blacks in the darker scenes are "crushed" (meaning a big part of the dark portions are just all black with no details in the dark, here an example) - it's a sign that a limited color range might have been shown in a full RGB color garmut setting.
Concerning "the face looks last gen", well it looks a loooot like Edge Maverick from Star Ocean 4 (not only artistically, but also in the sense of detail of modelling and shading etc), which is a gen 7 game..







