Baha'i Fulfills "Great News" of Islam

It must first be noted that the Contender argues from the Shia Muslim persective who are a minority sect of Islam with only about 20% of the total Islamic population. His interpretation that the "Great News" of the Qur'an is the first Imam of Shia Islam, named Ali, is rejected by 80% of Muslims. But I will assume here that the Shia interpretation is correct for the sake argument here. I address each of his points in numbered form: 1. Baha'u'llah was a Shia Muslim before he became a Babi and then subsequently claimed to be a Prophet. 1. RESPONSE: This is correct, but this has no bearing on my initial argument and only serves as background information for the bulk of his con argument. Historically, Baha'u'llah's family is from Mazandaran which was the last Zoroastrian Perian region of Iran that withstood the Islamic Invasion of Iran over 1000 years ago. His ancestor come from the line of Persian Kings the last of whom was King Yazdigird the 3rd. Baha'u'llah's family was of the landowning governmental class associated with the kings of princes of Iran, not the religious class. 2. According to Shia Islam commentaries of the Quran from the Shia Imams, that verse is speaking about the announcement of the Guardianship of the first Shia Imam, Imam Ali. Abdullah ibn Kathir says I asked Imam al-Sadiq (sixth Imam) about the aforementioned verse. He said "the great news is about the Guardianship (of Ali)." al-Kafi, 1:418. The author of Tafsir al-Burhan (Commentary of al-Burhan) mentions a number of similar narrations from the Shia Imams, that state the aforementioned verse refers to Imam Ali's Guardianship. 2. RESPONSE: The Sunni counter-argument to this Shia position is that the "Great News" is the news of the Great Resurrection or the Hereafter when people die. These are two different things by the way. The Great Resurrection is the belief that mankind will be Resurrected from the graves and Jesus will come from heaven, and all the prophets and people will be raised and will pray behind the Prophet Muhammad. The Hereafter is the death of the bodies and their encounter with God in the afterlife. It is clear from the writings of Shia Islam that they do not equate the appearance of Imam Ali with neither the appearance of the Great Resurrection nor of the encounter in the hereafter. Baha'u'llah, on the other hand, clearly claims that his appearance was the appearance of this Great Resurrection, something Imam Ali nor Imam Husayn claimed. Therefore, if we are to assume that there are different levels of meaning here, we can even agree that on one level it is a reference to Imam Ali, without contradicting the claim of Baha'u'llah. The meanings of this verse have different levels, in this order: First, Meeting with God; Second, Resurrection of Mankind; Third, Baha'u'llah; Fourth, The Bab; Fifth: Quddus; Sixth: Imam Husayn; Seventh: Imam Ali. 3. When his guardianship was announced people differed greatly on the subject and that is how Islams two most important schools were formed: Shia Islam and Sunni Islam. 3. RESPONSE: The difference spoken of here is the difference among the good and evil, those going to heaven and those going to hell, or those resurrected to pray and those who are sent to hell. A subsequent meaning after this may be the difference between Shia and Sunni, but just as above, this is a sixth-level meaning, not a first-level meaning. 4. Baha'u'llah in contrary to these clear narrations made a claim that contradicted them without providing a shred of proof why we should accept his words. 4. RESPONSE: Why anyone could accept his claims is irrelevant. The same argument can be made about Ali and the other Imam, even about Muhammad, Moses, and Jesus, and Abraham. Why should anyone accept any of their words? 5. So, no. Baha'u'llah didn't fulfill the "Great News" of Islam, it was fulfilled by Imam Ali and Baha'u'llah basically contradicted. 5. RESPONSE: I just demonstrated that there is no contradiction.