You can also see a comparison between the October Walthrough video (PC build) and Episode Duscae on PS4 running at 900p. This comparison was also done between the Version 1.0 for Duscae and not 2.0, which had better foliage rendering.
Episode Duscae looks so much better and it was also stable 30 fps without any frame pacing issues. I am 90% certain this is another rush job demo so that they could release it after Uncovered event, and they paid even less attention to it then Duscae. Developers know very well how hard it is to release a demo before the launch of the game and SE released two freaking demos instead of finishing the actual game =/
Finally here is Episode Duscae 2.0 with the improved foliage rendering compared to 1.0.