If you need any evidence as to what exactly has changed for some people, look at these before/after sliders on this elezen:

https://imgsli.com/MjU1ODgx
https://imgsli.com/MjU1ODg3
https://imgsli.com/MjU1ODg4
https://imgsli.com/MjU1ODkw
https://imgsli.com/MjU1ODkx

We're not talking about lighting here, we're talking about pretty big face reworks, including shape changes to eyes, lips, expression and nose on top of face shape. This is a big, big difference when you combine everything. Can you honestly look at these and say they're the same character? This goes way beyond textures and lighting.