...and what is so special about Christianity that makes it stand out above the rest?
I think that this is the biggest problem with religions. Christianity and Islam cannot tell you what makes them special. The only argument seems to be interchangeable between the religions, such as "the bible/qu'ran says it's true!" or "I know god/Allah".
I don't think Christians have a good answer for this and I think it is the weakest link for Christianity.
Not only is there nothing special about Christianity, its also all copied from earlier religions. Not only did the writers of the bible contradict each other, they copied earlier religions!