GT Sport is much more plug and play, you can just jump on and get into a race within minutes, nearly any time of day. The driving in ACC is better, but the graphics are much worse(on console) vs GT. There’s also a million different settings you have to fiddle with to get your car working, and then you have to tune your car, per track, per conditions. If you’re into super realistic everything, ACC is better. If you just want to jump in and race, GT is better. Both are great games, depending on what you’re looking for.