I'm a flight instructor, have been trained on most commercial 6DOF sims, sat on the FAA committee to certify sims, and seen many a good virtual pilot, who acquired his skill on something similar to Shah's home brew sim. I've also checked out and biennialed big rig pilots that had lost a lot of their manual flying skills.
I've not seen it done on an X-Box, but oh, yeah, that was your inexperienced, extrapolated non sequitur.
HF