Even if the Quran was the word of G.d its truth is only relative to the state of its followers and how they behave. To date Muslims show no better morality, love for all of humankind, more honesty than anybody else. It appears that G.d may have waisted His time producing such a work.
To be knocking the Bible shows the degree of Chritophobia present in Islam. Wouldn't you think that the word of G.d might transform Muslims instead of producing people no better than anybody else.
