Do Christians and Muslims worship the same God?

Alan Shlemon writes a monthly letter for Stand to Reason.  This month’s letter addresses the person and nature of God within Christianity by asking the question:

Do Christians worship the same God as Muslims? (Click to read the article)

Alan opens the letter by saying that most Muslims would say yes.  That’s not my experience… I have yet to meet a Muslim who has said yes.  They have always told me that Christians worship three gods, not one!  I also don’t agree with part of his conclusion in the letter.  I think if Jesus were to show up on the streets of Detroit today, every Muslim would fall in worship – they’d have no choice at Christ’s second coming – Every knee shall bow and every tongue confess that Jesus Christ is Lord!  Philippians 2 says this.  But I get Alan’s point.  If Jesus were to somehow return a second time in his state of humiliation and not his exaltation, Muslims wouldn’t bow and worship him, unless they converted to Trinitarian worship.

With that said however, Alan does a great job in my opinion of showing how Muslims believe in a God that is one person, one essence.  Christians believe in a god that is three persons, one essence.  Big distinction!

I like to say, “Jesus is God or Jesus is just a man.”  Clearly, we’re not worshiping the same God.  But from my experience, many Christians simply don’t fathom this.  I have seen classrooms filled with mostly Christians divided on this question, just like Alan said.

Why?  Why are Christians divided on this issue?