The whole idea of someone 'facing up' to God! If an alien ship appeared over your house (like in Independence Day) I don't think you'd be 'arguing' with any aliens that came forth from it. You'd be too busy shitting yourself. If there really is a God He surely wouldn't condemn the Christian guy anymore than He would condemn the atheist. So in my opinion, the story is silly but I see what the story is trying to achieve.
"The eternal mystery of the world is its comprehensibility"
Albert Einstein
Albert Einstein