Then you were intentionally vague about your criticisms of the Koran.
I was. Nor were the criticisms necessarily mine.
If you don't take the typical criticisms and thus agree with the notion that the Koran is a singular document within the history of the Arabic language and quite different from any other "words" from have from Mohamed, then awesome.
I think the document is singular, and I think it's transcription, composition, whatever you want to call it was a far more organized process than Xtian scriptures. In terms of its content, I am largely limited to English, and so have little authority to comment on the uniqueness of it in Arabic. As to where the content came from...?
As far as the Qur'an being "internally" theologically flawed, sorry but the Christian Scriptures are actually much more complicated and contradictory, which I find frankly to be a strength incidentally. (FWIW, I am not expert on the Koran; however, it ain't hard to see how it is more consistent throughout in its understanding of God. And how it leads thus much to a more easily to systematic theology, which again I find to be a weakness. After all it is written in direct light of engagement of neo-Platonic with Semitic thought. The Muslims didn't have as much trouble of having to make their Scripture speak Greek so to speak, ironically as some would say.)
The theology is flawed in that it contradicts the truth (according to Christians), not in that it doesn't meet qualifiers which deem it excellent theology. The Qur'an (and Islam) can be quite compelling. Although Islamic complex theology exists, there is really not much need for it. No need for divisive Christological debates and the like. The idea that the existing Semitic populations of the Byzantine Empire were all forced to accept it is nonsense. They appreciated freedom from the petty, mind boggling, out of touch yammering, along with the simplicity of the message. This hasn't changed much in the Holy Land to this day. Just ask an Arab Patriarch...
That said, I've always found the abrogation arguments a bit unconvincing.
And to notions of the veracity of the claims about people's lives based on their "biased" nature, toss out all your lives of the Saints, Gospel, etc.
Of course, but I am an Orthodox Christian and so I try to believe the stories of the Saints. I don't try to believe the "biased" stories about Muhammad.
I have to escape the Western, logic confined mindset and enter the Eastern world... Hah! I had to do it, but I couldn't continue any longer with that bit.
A generous reading of charity rather than suspicion I find over the long run will find the real problems which lie within texts. Ones you can actually discuss with those who love them, as you have as well.
I think we're in agreement on this.