Speaking of sim modeling, according to the experience of NG test pilots, the buffet during the approach to a high altitude stall is so pronounced, one would have to be in a coma to miss it. This is an area where the simulator lacks fidelity
I agree with the NG test pilots comments. I don't think all simulators lack the fidelity. Certainly the buffet is very heavy in the 737 Classic simulator I am familiar with. Maybe it depends on the fidelity (serviceability) of each particular simulator?