Really, Before you "knew man" you were overshadowed by the Holy Spirit, and give birth to the Christ child? Funny I don't recall seeing any mention of that on the news.
Ask Paul.
He wrote Ephesians under the inspiration from the Holy Spirit.
If the Holy Spirit tells us that we have the same grace, I’m not going to argue.
And of course, the argument about her being graced is not in regard to her simply being chosen to bear Jesus, but it’s a matter of Catholics using that verse to claim that she is sinless.
But I suspect that you already knew that.
Thus I consider your show of naivety to be specious at best.