Digital Foundry testing shows that the Switch version uses a modern temporal anti-aliasing technique combined with adaptive sharpening that does a much better job of masking jagged edges than the outdated T2X anti-aliasing used on PS4 and XB1 back in 2014. This results in considerably improved image quality, as Alien Isolation is a game with alot of straight edges thanks to being set on a space station, and those large numbers of straight edges constantly shimmered as you moved on PS4 and XB1. There are some areas where PS4 and XB1 are better, they run at a native 1080p, whereas Switch uses dynamic res that ranges from 756p-1080p, and there are some graphical settings like ambient occlusion, motion blur, level of detail distance, and shadow pop-in distance that are lower or non-existent on Switch. Cutscenes are also more heavily compressed on Switch, likely to cut-down on file size, and loading times are slower as well. However, in spite of all of that, the Switch version still looks better to me personally, as someone who is particularly averse to aliasing artifacts.