This is debateable because Forza and GT take a different approach to the matter: In GT you feel all the movements of the car compensating for the lack of feedback you would have through the seat, while in Forza you just feel what you would feel through the steering wheel/column in real life.
Man, please. Please. Seriously.
I am on my phone, so I can't link stuff for days, but please search my username with "XID" and "HID" keywords, even in this very thread IIRC
XID in FM gsmes is nothing but emulated contoller input with basic shock values transferred into FFB. Amazing work done by Fanatec to make *something* out of Xinput is remarkable, as well as fully released slip-physics of Simulation mode - which also fails miserably once the actual countersteer grip comes into question, because Xinput simply can't produce actual grip-reverb (tension-release-tension) due to way it actually function.
I've read similar claims for years, they are all cringe-worthy. GT is developed from the wheel to controller since 2000, PD co-developed 3 wheels in past 13 years around their libraries with Logitech and Thrustmaster. They go that far they actually program separate linearity for different cars to compensate fior axle-degree dofferences in order to provide unique control-scheme.
We can discuss many things but his one should really be left out.