Jesus was God taking human form. If Mary was perfect, then God really wasn't taking on the typical human (sinful) form. God's perfection allowed him to take sinful human form and yet still be sinless. Mary was sinful just as all humans are sinful.
No disrespect to the late pope but his position is not in scripture either, unless you think that "upon this rock I build my church" is somehow prescriptive. Would a Catholic care to explain this also?
Asked and answered. Several times. Mary could not be anything except sinless if she was "full of grace."
Jesus was God taking human form. If Mary was perfect, then God really wasn't taking on the typical human (sinful) form.
The fallen human condition (original sin) is that of a depravation of God within us. We are born with a "God-shaped hole" in our souls. Now Jesus, being God, could in no way Incarnate as a human deprived of God. He is God!
God's perfection allowed him to take sinful human form and yet still be sinless.
You are correct that it was Jesus's Divinity that made it impossible for him to sin. And you are correct that He was not immune from the temptations of the flesh. But He could not have taken a human form with Original Sin, as I explained above.
SD