One of the "miracles" of the Quran requires misspelling the name of the city of Mecca. This is a "wrong" spelling and an "imperfection" in a supposedly "perfect" book. They need the error to keep the miracle, and they would lose the miracle if they were to correct the error.
To quote Fr Hopko, "we have a Bible, not a Quran". Trying to use the Bible as a Quran (whether on purpose or not) has lead some Protestant groups to strictly hold Bible inerrancy (because God's Word can't be wrong) to the point of inventing nonsense heretical doctrines for the purpose of supporting their claims. I've seen this range everywhere from the pre-existence of the soul to claims that Christ did not receive His Flesh and human nature from His Mother.
The Quran is nothing more than a demonic imitation of what is God-inspired. There just might be some "miracles" in the Quran, but demons can do all kinds of miracles in order to give the appearance of what is holy. I don't base my relation to God based on how well it squares with human scientific understanding, whether it be how bones or formed in a fetus, the exact shape of the earth, or a scientific explanation of "how" God created all that exists and brought into being. Faith is to bring us close to God, not teach us science.
Sorry for the rant, I hope you find a way to make whatever he claims to be "important" to be not so important when it comes to what really matters.