The answer to that question should come from the bible. "With men this is impossible; but with God all things are possible." Matt 19:26.
That means that if one prays to God (YHWH) for the person to be saved, then it is possible. Otherwise it is not possible without the person wanting to change themselves.
Ignorantly many christian are worshiping other gods without their own knowledge. For example any material that is paramount or occupies the thinking or reasoning of man more than God becomes an idol. God expects all Christians to have him first and number one in their lives.
Christianity teaches you that anyone can be saved who seeks forgiveness through Jesus Christ, but they must do so on their own accord. You cannot save anyone who doesn't choose it for themselves.
If the religions are valid it would come down to who has the most faith. If neither religion is, then it hardly matters.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.