Where do you get the idea that "sinless" equals "divine"? Adam and Eve were created sinless and remained so until the Fall -- does this mean they were equal to God until then and only then became human?
You've just proven Col._Flagg's point. Adam and Eve DID sin, therefore they were not born without a sin nature. And they eventually acted according to that nature.
Just like Mary and the rest of humanity are born with a sin nature and succumb to that nature by sinning.
Further, it is basic Christianity 101 that there has only been one person born without a sin nature and who committed no sins -- Jesus Christ.
" For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him." -- 2 Corinthians 5:21
Where does the word of God say that about Mary? Rome turns a simple Jewish girl who was blessed by God to carry the Christ child to term into a brazen, superstitious, anti-Scriptural, truth-denying blasphemy.
Repent of it.