After 4A Games have announced that they will use the Raytracing technology in Metro Exodus, a new video has been published concerning the comparison between real-time Raytracing and Rasterization in Metro Exodus. You can judge by yourself that the realistic Ambient Occlusion the Raytracing Technology seems much more genuine than the Screen Space itself.
PCGamesHardware has published Raytracing vs Rasterization video:
However, it’s quite notable that is far from perfect, and when they swap to the full-screen Raytracing example the FPS drops are still there. However, the RTX is architected to support raytracing and is vital for the gaming industry to invest and make it useful very soon.