I think the point that barit1 was trying to make was that it was only a UK requirement for the 727 to have a stick pusher. As it was/is for the other UK registered T tails. Trident, 1-11, VC-10 etc. Not sure about the DC9/MD80 as McDonnel Douglas is just Heath Robinson having a laugh!
Coming back to my earlier point about the tail mounted engines and the deep stall. I always understood that an a/c with wing mounted engines has the ability to 'power out' of a stall whereas tail mounted engines will stall/surge in a deep stall as the disrupted airflow over the wing disturbs the airflow into the engine intakes. IE 1-11.
The original design for the 757 had a T-tail and wing mounted engines. Would this have suffered from an unrecoverable deep stall?