1.) The Miracles in the Quran are supposed to be vague if Allah had pumped them out,it would have destroyed the test.
2.)XDDD Christian prince himself uses word games in Arabic,I mean the guy believes Eid al Adha is after Ramadan when it is Eid al Fitr LOL
3.)There aren't any arabic mistakes,you see,It was revealed in a Arabic 1400 years ago,Arabic has evolved now,but back then,it had words of Persian language,hebrew and many other languages
4.)Well the issue why they agree is because he deletes the comments of those who criticize him. which is very very coward-like.