I believe the point is that when any person who believes the true God has the object of his faith denigrated, he may get upset; but, no one will be beheaded. But, followers of Muhammed automatically sharpen their knives when their prophet is spoken of with anything but adoration. It is only natural. The World hates Christ and his folllowers and will always do so. But, praying to Mary is just as effective as praying to Muhammed - or Allah.