Yeah, Ryu should get that checked out. :/
Here's an appreciation post of entirely perfect (if you ignore those ugly tats) and lump free Rig. Yeah, I already admitted I am unhealthily obsessed (I've at least taken 50 photos of just his face, lol), but I still can objectively say his face model is so well crafted and so expressive.
The inconsistency of the models is baffling really. Beautiful faces (that are up to par with best of the industry, like God of War, Uncharted, Detroit...) next to amateur anatomy mistakes, PS One era texturing and obvious graphical errors they probably never intend to fix.