If you speak with an atheist on logic you're going to get resistance. But if you deal with their conscious then there's a level playing field. So apparently logically Christianity is at a disadvantage.
Oh, and do check out pulltheplugonatheism.com it has some classic videos like this one that asks Was Galileo an atheist?
A youtube comment on it says it best:
No one claims Galileo was an atheist.