BoboTheMighty
SasqWatch
When I say it, I'm only talking about the setting. Not any gameplay mechanics.
I'm no expert on GTA ( played last few once, done and done), but it's pretty much a very obvious satire/USA. And color palette/art style is sort of brown'n'grey style/realism.
CDPR's Night City seems a lot more vibrant with different elements..those megabuildings for one, are obvious Judge Dredd influence. Also we've only seen two major areas of the game ( which are less tech advanced/rundown).