i mean, im not sure if there is a 'correct' answer to this question but i would say that the community of mc is much larger and the game's focus is centered much more onto building. this leads to a community that cares more greatly about visuals and making their builds look cooler. so shaders have come alot further in that regard. where vintage story is clearly alot more about progression and survival so the community focuses on that over things like shaders and texture packs. though i would say world generation mods are about as good if not better for V.S. it is most definitely possible with the games enginge though, as you have managed to obtain an image of similiar 'epicness' even if only 1/10 times. speaking of which that could be because vintage story has simulated weather and different areas have different cloud coverage/rainfall amounts and extremeness as well as longer/shorter sunsets depending on time of year
p.s.
Vintage story is incredibly optimized and thats a big deal for alot of people. optimizing shaders is quite difficult especially if you want them to be up to these standards.