You also have to take into consideration that not a lot of aircraft fine tune their aircraft for CFD. PMDG for example uses their own custom flight model rather than the one MSFS provides, while it is amazing, it is not perfect and PMDG still have a bit of work to do to get the 737 right from the way the aircraft behaves in the air to the way it handles on the ground. Taxing for example feels so unrealistic and literally like you are taxing an aircraft that turns instantly regardless of if you are taxing slow or fast. Flaring on approach also feels really lightweight as if you are flying a Cessna.
The only aircraft I know that utilized the full CFD system is some of Asobo default aircraft like the C172(G1000) and such. Only third-party aircraft I know that use CFD are FlybyWire and Fenix. Let me tell you, the way these aircraft fly feel so much better than any other 3rd party aircraft out there. If you use these aircraft, you will notice how well the aircraft handles so much better on the ground than PMDG and how the Fenix feels on approach when coming into a flare. It actually feels like you are flying an airliner on how it feels in terms of weight.
It is all dependent on how well the developers use the tools that they have.