I think many are missing the point here. There's a swedish "game" called Plauge of Cholera. Which is where you have to choose between two alternatives both are obviously bad, it's about picking the lesser of evils. The third option doesn't exist as it's a hypothetical issue.
I think generally men have a hard time to understand the "bad christian" alternative becuase we can't really understand the horrors that women are put through in many marriages christian and secular alike. The beatings, the drinking, the abuse and the degradation.
This being said. I'd go for the Good non-christian anyday. Better a loving person that haven't met Jesus than a person that has met Jesus and behaves like a devil.