With Far Cry, I'm yet to even play FC 5 more than a few hours let alone finish it.
Despite playing majority of FC titles, FC 5 is just unplayable to me. I tired to, but world was so big, story was crap and I just didn't like that setting at all. It felt like they tried too hard and thus the whole game was rough to play. I tried to play it many times, but I just didn't like it. It was a chore to load it up and decided to get rid of it. So far my FC series rating would be:
Far Cry - 10/10 (My favourite so far, best gameplay, best action, best setting, best sound design)
Far Cry 2 - 4/10 (Really boring gaming, but not off-putting, tons of bugs if fps is unlocked without Vsync on. I haven't even started to play a game properly yet, but I don't really see much potential in it.)
Far Cry 3 - 9/10 (Was really good release, but at times world shit was just too tedious. Ending was a bit poo.)
Far Cry Blood Dragon - 9/10 (Some great fun without slog of open world and overly long story that I don't care, in a way reminds me of first game)
Far Cry 4 - 7/10 (Decent, but it was so long. Very obviously recycled FC 3, so the game itself felt like it brought nothing new, just some characters with mental issues, oh and Pagan Min - chan, who frankly wasn't entirely wrong)
Far Cry 5 - 2/10 (People like it, but I couldn't give a shit about it, again very recycled FC 3, but now with more boring world, way too many things to do and story that is both cringe and boring, characters that I can't enjoy at all)
Far Cry 6 - doesn't fit on ssd/10 (I had to delete some stuff to fit FC5 previously, but I couldn't be arsed to do the same now, I have a feeling, that FC6 might be more of the same of FC5)
Better textures, high poly-count models, better lighting and yes, better shadows.. And that's just what I can see from the screenshot you posted. I think it needs refinement to look it's best, but as is it doesn't look terrible.
It looks pretty poor for what was supposed to be enhanced game. I was starring at them both and besides more detailed (but maybe not even higher res) textures on right, I frankly can't even tell which is supposed to look better. Maybe shadows are poor on left one, but right image was clearly different setting and shadow softness and etc look the same. Poly count looks worse on right as ear looks blockier, while everything else is the same. Also sweater under metal suit looks like it was less polygons on right image, compared to left as it is a straight oval, meanwhile on left - it has waves. Right one has only a tiny better metal suit textures, circles still look quite poor. AA seems to be improved, but you can force it on in Radeon/nVidia control panel, so it's not a strong argument to make.