You have to distinguish between the renderer and the assets it is rendering. In the video you linked to there are a huge amount of very specific assets (especia

You have to distinguish between the renderer and the assets it is rendering. In the video you linked to there are a huge amount of very specific assets (especially textures) and a few effects are doing a lot of heavy lifting. In the demo on this page it is fair to say the starting camera position is about the least impressive location in the whole scene though. If you move it to hover up nearer where the lights are you see a lot more is going on.