So, they confirm they released PC screenshots (while for now this version has been cancelled). They also confirm screen tearing (Uncharted 2 does not) and 4 to 8 times fewer polygons for main characters than Uncharted 2. 4x anti-aliasing probably hints at a sub-HD rendering resolution on the XBox 360.
Also considering Uncharted 2 so far seems to sport higher quality textures, better HDR effects and more complex world with more going on on screen, I think it's safe to say this title will not by far top Uncharted 2 in the graphics department.
I love Remedy's past efforts though, so I may get Alan Wake for the PC at some point if this title meets expectations.