I have no intention of defending the heretic who's been posting, but I do want to correct your assertion that Sola Scriptura is equivalent to the Muslim view of the Koran. Muslims also consider the Hadith authoritative. Hadith means... tradition.
Some Muslims think of the actual Koran as existing in heaven in the Arabic language, which is why they don't put much stock in translations. The Protestant Reformers did not go this far. The Koran is a single book, like "Ezechiel" or" Matthew." . The Bible is a collection of books , and Luther among others did not hesitate to revisit the canon. But Devout Muslims and certain Christian Fundamentalists each treat their respective Scriptures as literally the oracles of God, speaking through the mouth of the prophet. A devout Muslim treats his copy of the Koran as reverently as a devout orthodox treats a sacred Icon and treasures every word. The Haditha are authoritative but secondary.