For me GT7 is the winner.
ACC is great in physics and handling, good in AI after the two first laps , sound, quite bugged (track ambience) since launch on "next gen"
FFB regular (original AC is way better).
That's the "strong" parts of ACC on console...
Let's go with the less good ones....AI (all of them) gets banned off races in career mode and championship mode/ bugs and issues in button mapping, game crashes...one single special event since months, competizione servers broken (stuck in box) CP rating system don't work since launch on old Gen, still not fixed on next Gen, little to none people on online, no ability to change driver abréviation,no visual light rain in cockpit view, no dynamic track surface working on most tracks and so on.....a real bugfest, for me cyberbug of simracing.
Kunos don't work on console version and don't care about console comunity, none of their eSports events is hosted on console, support is bad joke and console versions are near a year behind PC version.
Yeah, good for some single races offline or hotlaping....but i can't call it a competitive sim on console in any aspect.
On GT 7 at least things work better, Yes, less physics ,normal, cause it's a game focused towards all kind of people , online at least works ad with a quite big community and crossplay (ACC no), here you can save full replay's, FFB isn't the best but working, sounds are good for what it is, graphics way better than ACC, AI can be better for sure,but at least I can enjoy the game without suffering lots of issues and bugs.
If I want a better sim,i go for original AC, way better game than ACC (on console)