That statement is soooo wrong....The truth is Christ stands between God and humanity. Mary has no place in the Godhead whatsoever...regardless who states so of whatever faith they hold to.
"From the fullness of HIS GRACE we have all received one blessing after another......Grace and Truth came through Christ" John 1:16
Argue with Luther, he said it.
Are we or are we not surrounded by a cloud of witnesses?
Who do you suppose makes up that cloud?