We are talking way different scope here and I find it hard that you cannot grasp this Ice.

Building FM's for civilian aviation is way different to military. Guys that use FSX and X-Plane do procedure flights and most of the developers only build FM's in this region because they can cost a lot especially edge of the envelope (Wind tunnel data).

To compare you would need a developer to build a stunt plane and see if you can hit the real numbers performing the same stunts performed IRL. FSX cannot do that and again the Q400 was built outside of FSX as this is used to train IRL pilots.

We know in DCSW you cant fake the numbers, because of the many passionate combat simmers ready to jump all over ED if a rivet is missing.

I'm trying to do a big write up of all this with resources soon Ice.