It didnt have rt nor higher res on ps4, spiderman2 is next gen, just its not super impressive, same like many next gen only games we got already.
U want next gen fidelity, which means 30fps, no rt and 1080p or some 796p upresed by fsr2, since only this will make sure enough of power in those consoles is left for generational jump in visuals, fast traversal in spiderman2 automatically makes it impossible to look trully "next gen", what would have potential to look trully next gen would be something like the order 1886 sequel, black bars to reduce pixel amount, 30fps, corridor shooter, slow pace, basically everything possible to make sure all the oomph in ps5 or xsx is put into bells and whistles.
Btw, many times mentioned by u as an example of amazing looking game- horizon FW is crossgen too, its dlc isnt, and does it really matter?
Forza horizon is crossgen, MS flight Sim cant run on last gen, so is next gen too, even tho it launched back in august 2020 on pc
Cp2077 is crossgen, rdr2 is lastgen, but good looking game is still a looker even tho its crossgen/last gen.
Demons souls ran and looked like shit on ps3, yet with competent devteam its a looker on ps5, and has 4k30 and 1440p60 modes too, just no rt, simply no more oomph was left, ofc no open world, and no fast traversal either, gotta make trade offs, same like with starfield- terrible npcs/ loading screens, and long ones(on consoles) basically all the time ;/
Cant have it all here, current gen consoles are simply too weak, its smallest jump ever in terms of gpu, cpu 3x jump isnt bad, but only coz that shitty jaguar tablet gpu in last gen consoles.