New features include: - Support for high resolutions, and widescreen - Improved gameplay and level design - OpenGL for video backend to provide portability and support for vertical sync - Dynamic lighting, bloom, FXAA, enhanced water effects, lights shafts and more - Ability to freely rebind all keyboard, mouse, and gamepad inputs - Steam Achievements
http://steamcommunity.com/app/405820/discussions/0/494632506577306767/
Even though from screenshots you would assume games are near identical with few tweaks, to me it seems like there are some under the hood differences which would require seperate articles. As I don't own neither one of the games for PC can't confirm though.