What is better Islam or Christianity?
That is an opinion question and cannot be answered.
I am a Muslim and strongly believe that everyone is equal no matter what. So no Christianity is not better than Islam nor Islam better than it. Answer I'm a Christian and follow the teachings of Jesus Christ, I believe that all monotheistic religions have similar beliefs and teachings. What ever religion you want to follow is up to you and I will not discriminate against you for it.
A: Islam teaches that Christianity departed from the original intent of God, as revealed in the Koran, and that Islam is the religion on which Christianity is based. Others say that the prophet Muhammad developed Islam from his knowledge of both Christianity and Judaism On this view, Christianity was a parent religion for Islam.
The question should be " What does Christianity have to do with Jews (or Judaism)?" Judaism is like a tree where Christianity is its branch and Islam is it leaves. Christianity is based on Judaism and Islam is based on Christianity. The major difference between the three is that Judaism doesn't have jesus in it unlike Christianity and Islam.