Hi:
1) LSAS will try *really* hard to stop you from stalling. You have roughly 20 degrees of elevator, and the LSAS system has 5. So if you pull full aft, and are in the LSAS stall protection active, LSAS will give downward 5 degrees meaning you only get about 15 degrees upward deflection.
Furthermore the elevator feel system may reduce the deflection a little more, and lastly the MD-11 has a very small tail for fuel efficiency, so as you approach the wing stall area, the elevator loses its effectiveness very quickly, this is one of the reasons for the LSAS system to exist to modulate the elevator's movement to sharpen up the response during normal flight (and provide some basic pitch attitude hold/damping - similar to an Airbus but not as precise)
So naturally the system will try really hard to anti-stall you, making an attempted stall not very easy
2) If you want to throttle back, you will need to turn the AFDS OVRD's on, to prevent the ATS Speed Protection from maxing out the power to the thrust limit in an attempt to prevent underspeed.
Hopefully I understood what you meant correctly. There is room for improvement in the stall behavior, something I plan to address further later.
I really appreciate your feedback btw!
Kind Regards,
Josh