yes, it does. because if the qur'an is the word of God, it must be the truth.
it is as simple as that. so there really isn't room for argument.
but it is still a leap from that to conclude that jews are not monotheists. this is the part i have a problem with. jews are just as strongly monotheistic as muslims.
but you forget that that too (bold) is in the quran, as a natural consequence. so how can you think there shall be room for argument on what concerns you?
i think at this point it is better to assume they are just as interested in an objective vision of the world as i am... if the conversation gets nasty i will stop talking.