Different FFB wheels can make huge differences for some titles.
Assetto Corsa for example feels pretty lame and "last gen", almost like a GT game with my T500 - the motor is just too heavy, too much momentum, too stiff. With the weaker but more modern Thrustmaster TX AC feels brilliant. With my T500 I'd have problems judging if the FFB is truly calculated from self-aligning torque, including caster and SAI geometry.
Wouldn't have that problem in Automobilista, it's a very clear case there with both wheels, the FFB is less filtered and dampened there.
Either way it's hard to defend GTS's FFB if they don't even have the correct degree of rotation, steering ratio and linearity for different cars and instead use the same for all cars. That's like not even trying.