The Devil Inside said:
the very nature of religious discussion has to presume that all religions or spiritual systems start on equal footing, otherwise the discussion is a conversion attempt.
it is that simple.
You can presume that none of them are true, and that would put them on equal footing. I don't think that is what you meant, or maybe it is.
Logically speaking the bible and the koran can not
both be true regarding Jesus. One or both of them is lieing. That is a matter of both faith and logic (without faith).
We can compare what the bible says about Jesus and what the koran says about Jesus. This is done all the time with
comparative religion. Obviously when the Bible says Jesus was crucified, and the Koran says he lived and he was not crucified, logic tells us that at least one of them was wrong. They could both be wrong if Jesus did not exist to start with. QED.
A Muslim, a Christian, and a Jesus Myther would have three different beliefs about it, and would be a matter of faith (or lack thereof) from each of the individuals. Logically speaking only one can be right, but it is not my job to impose my beliefs on you or vice versa. It would be ok for me to say I believe Jesus is the Christ, but it would be wrong for me to say my belief is better than yours, or "my God is bigger than your God," which the rules clearly say we are not supposed to do. Atheists are guilty of saying the God I believe in is no God at all -- but they don't speak for me,
so their claims clearly break the rules. They can speak for their own beliefs but not for mine.