A33Zab, pls be a little patient with this SLF but where is the evidence for a sustained ND input ? The whole discussion about the relative authority of the elevators v THS seemed to be along the lines that failure to manually trim frustrated the efforts to get the nose down. I didn't understand any of that from what I have read as I didn't see a sustained attempt at ND, and in any case there was a post claiming that the elevator design does provide enough authority (although in that dirty air who can be sure).
Sorry if I have misrepresented your argument.