Why is Ayn Rand's ethics better than that of Jesus?

I was recently invited to participate in a live student debate at a local church on the topic, "Who Was the Better Moral Philosopher: Ayn Rand or Jesus?". The audience will be mostly Christian or neutral: there will only be a handful of people familiar with Objectivism present. What points would you make if you were to speak to an audience of interested laypeople on this topic? What subjects might be best to avoid? What aspects of Jesus' ethics might be good to highlight as flaws? What resources -- other than the primary sources -- might you suggest on this topic?