They probably have normal maps but the screen is so far away (you can see it in some light reflections).
In UE is pretty damn straight forward to do parallax occlussion (it's a basic effect in the editor), it's not very consuming and the results will look A LOT better (pretty much night and day). It's not something that can be called by lack of time either, you can create a displacement map for a texture in 30 seconds.
I don't mind too much about the lighting, it seems they have a very high bloom threshold (and YS must really like bloom, seeing xII ). I really want to see what the guy wants it to look like and not what I would like to see it look like.