I prefer Quantic dreams model. It looks more real for me despite the lack of detail ? I don't even know how to begin explaining that :/
Anyways i think we seeing two demos with different purposes. One to convey human emotion caught mostly from the eyes according to cage and the other to show off super detail, lighting and a crazy range of realtime facial animations.
I think the nvidia demo is entirely possible on the ps4 gpu btw :) According to Nvidia's CEO the demo showed only used 2tflps of Titans gpu power.