Well the guy is ignorant of basic logic, 1. He asks a question which neccesitates more than a simple yes or no, for example, if I asked you 'Is your Mum out of prison' and said say just yes or no, then it'd be impossible for you to answer, because this has a statement within the question, similarly his 'god inspired' question is default because he is using different standards, and using words with different meanings like 'good' = perfection and so forth. 2. He is using one theological view i.e. of Islam to propose an outcome into another theological view i.e. christianity.
What I mean is that in Islam sinlessness does not neccesitate being God whilst according to his theology it does.
Furthermore the verse he is quoting is disputed in the bible itself since the author of Matthew changed the verse to something different, which actually stands as proof against him.
