After reading some of the claims listed on the site you linked to, I can conclude that there is an element of misinformation behind the content. And because there is so much of it, it would be unfair to expect me to sift through the material and provide a rebuttal for each claim. So I will direct you to a book which, if you sincerely desire the truth, should answer your question: http://islamicbookstore.com/b7626.html
If the Qur'an has never been altered, what about all the claims that it has listed here: http://www.answering-islam.org/Quran/Text/
The Muslim Perspective
In my previous question you beautifully pointed it out yet missed it: Jesus says I have lost NONE and also (same context) lost ONE. Math contradiction, is it N/ONE?
How do you know your god is good, and is not actually a satan making us think he is good?
Answers: Atheist, Christian
What is your standard of truth? How do you determine what is true?
Why doesn't prayer work, when the bible promises that it will (John 14:14, for example)?
What's an easy way to demonstrate that Atheism is false?
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