Hi HN39,
Probably because the stickshaker has been set to operate before natural stall warning occurs.
Correct.
At low Mach Nos, the stick shaker will operate before the natural buffet. (Clean or Landing Config and low ALT).
At high Alt (hence higher Mach No) the natural buffet normally occurs before the stall warning.
Hi Centaurus,
or cause a secondary stall buffet because of over-controlling by a ham-fisted pilot.
It is very difficult to judge how much "g" we are pulling in the simulator because we only feel 1g in the sim at all times. In real life I think you'd find your "ham fisted" pilots would be more gentle because of the feed back loop through their "g" sensitive bodies.