What about the whole Son of God thing:

Meek, a self-proclaimed Muslim for the past 16 years, said his interest in Islam began when he was studying to become a Baptist preacher. He said he began wondering if Muslims were “confused Christians” or whether Christians were the ones who were confused. Meek said he was unsure of how to confirm his beliefs.
“I started from the prospective that I wanted to study the Bible to convince people that it’s true,” he said.
As he started studying the history of the text, he said he began doubting the truth of the Bible.
Meek said he compared the two religions and decided on Islam.
“It’s more compelling, more attractive to me,” he said.
He now works as the president of the Islamic Association in Lewisville and said he enjoys speaking on the topic of religion.
“Islam is totally more convincing,” he said.
Meek outlined the fundamental doctrine of Islam, a monotheistic religion like Christianity. About 1.7 billion people worldwide practice this faith.
Muslims affirm that all people are born Muslim, and they can either choose to embrace the teachings of their creator, Allah, or convert to a different religion, Meek said.
“If Jesus were here, he’d be a Muslim, and he’d say what I’m saying,” he said.
[…]
“People would be dazzled at the fact that Muslims revere the same God that Christians and Jews do, and revere all the prophets mentioned in the Bible,” he said.
Fort Worth senior Christopher Cotton said he feels reaffirmed after attending the lecture. Cotton works with a Bible study group and said he has been studying the sources of the Bible.
“I’ve been reading the Quran,” he said. “I like their [Muslims’] discipline and I respect the clarity they have.”

It is impossible for Muslims and Christians to worship the same God because we believe Jesus is God and the Muslims don’t and we believe that God is the Father, Son, and Holy Spirit. We believe in a triune God, the Muslims do not. Two mutually exclusive views of God, how can they be the same?
If Jesus were here today and said that he was the Son of God, they would try to stone him. Their response would be probably be similar to the Pharisees of Jesus day.
(Link via little green football)