“I mentioned our Lord’s humanididdy only to bolster that argument against the thesis that sinlessness necessarily made our Lady somehow less human.”
The fact of her sinlessness is not the problem at all. It is that the Latin Church claims that from conception she was different from the rest of us and thus sinless. That’s the rub and that’s what makes her “not human”, whence the Christological heresy, etc.
I am hereby totally at sea! As far as I knew the only way in which we/they/whoever teach that our Lady differs from the rest of the human-type personnel is that she is sinless from conception -- not that she is something else and therefore sinless.
Is the answer in your other posts on this thread? Are you saying the immaculatitude is an essential (with respect to what it is to be human) difference- or, rather, that we say that?
Dadgum it? WHAT Christological heresy? Guide me along here, I'm juggling too many things at oncet!