(1) The Finality of Mohammad (s) in terms of Nabis, is clear to me in the Quran. To clarify briefly, if it was metaphoric meaning of any type, it would have said "Mursaleen" instead of Nabiyeen. That is if Baha'allah interpretation that it mean all Prophets were each other and hence Mohammad (s) is also the final as well that way, a better expression to that would be to say "al-Musraleen" since it's more comprehensive of all those sent. Similar to other interpretations such as ring, seal as in verifying type meaning, etc. It's clear that it mentions him first as a Rasool then seal of Nabiyeen. I've shown before per Quran, not every Nabi is a Rasool and not every Rasool is a Nabi. Both are true but it happens to be the case, the Quran also expresses them as if almost all where both. In this sense, it can be used interchangeably, but to finalize, it's specific to the word. This suggests the Seal/Finalizer is the true meaning.
(2) The day of judgment is clear to me in Quran as well. The Bahai interpretation that Isa (a) was day of judgment of Musa (a), Mohammad (s) day of judgment of Isa (a), and Ba'ahallah day of judgment of Mohammad (s) doesn't stand to what Quran actually says. For example, there are verses that say there will be no room for denial on that day. If you know the Arabic, it doesn't mean "You should not deny", but means there is no way denial will happen. But Bahais rely on translations often, and so when shown these verses, they get a translation and say it can mean "You aren't allow to deny", but the Arabic is clear, that there is no way for anyone to deny that day. There is many features of the day of judgment, and it's explained to be also when people will enter hell. Per Quran, hell has different realities, it encompasses disbelievers in this world, but they don't notice, it's more manifest after death, but still it's not to the level of punishment of day of judgment. The Quran is clear hell will only come in full of view on the day of judgment and that is when people will enter it's full reality. There are many verses, and I can go on forever about this. Anyone interpreting them in unbiased way, no one would come up with Bahai Faith conclusions about it.
(3) There is Twelve Successors and Imam Mahdi (a) is the Twelfth successor. This is true per Quran and many hadiths as well. While if we count the Bab, Baha'allah and his two successors, and say they are successors of Hassan Al-Askari (a), then the Mahdi (a) can't be the twelfth successor. You get either 11 successors to Mohammad (s) (not counting the Bahai chosen ones) per Bahai Faith or 15 (if we say they are sons of Hassan Al-Askari (a)).
(4) There is an Imam in all times per Quran and many hadiths. There is no current Imam in Bahai faith.
(5) Bab and Baha'allah were not related closely by kinship which violates the rules of God in that regard pertaining to succession.
(6) Similar to the above point, the offspring of Baha'allah didn't continue the mission and so there is no real form of Ahlulbayt in the sense of having Successors add up to Twelve and a chosen kinship to continue the mission of the founders.
(7) The final Messenger (The Mahdi per hadiths) per Quran would be sent universally that every city will be tried with him and there is potentiality that every city is destroyed before of day of judgment. See Surah Isra.
(8) The finality of Mohammad (s) in terms of Nabis is narrated from the Imams (a) in many hadiths.
(9) Mohammad (s) and his family (a) being the best of creation is narrated a lot in hadiths and verified in Quran. God always replaces one Ahlulbayt by a better one, but there can't be any better Ahlulbayt (a). Therefore we can conclude on the basis of this that these are the final chosen ones sent to mankind.
(10) The Bahai writings are no where on par with Quran in any field.
(2) The day of judgment is clear to me in Quran as well. The Bahai interpretation that Isa (a) was day of judgment of Musa (a), Mohammad (s) day of judgment of Isa (a), and Ba'ahallah day of judgment of Mohammad (s) doesn't stand to what Quran actually says. For example, there are verses that say there will be no room for denial on that day. If you know the Arabic, it doesn't mean "You should not deny", but means there is no way denial will happen. But Bahais rely on translations often, and so when shown these verses, they get a translation and say it can mean "You aren't allow to deny", but the Arabic is clear, that there is no way for anyone to deny that day. There is many features of the day of judgment, and it's explained to be also when people will enter hell. Per Quran, hell has different realities, it encompasses disbelievers in this world, but they don't notice, it's more manifest after death, but still it's not to the level of punishment of day of judgment. The Quran is clear hell will only come in full of view on the day of judgment and that is when people will enter it's full reality. There are many verses, and I can go on forever about this. Anyone interpreting them in unbiased way, no one would come up with Bahai Faith conclusions about it.
(3) There is Twelve Successors and Imam Mahdi (a) is the Twelfth successor. This is true per Quran and many hadiths as well. While if we count the Bab, Baha'allah and his two successors, and say they are successors of Hassan Al-Askari (a), then the Mahdi (a) can't be the twelfth successor. You get either 11 successors to Mohammad (s) (not counting the Bahai chosen ones) per Bahai Faith or 15 (if we say they are sons of Hassan Al-Askari (a)).
(4) There is an Imam in all times per Quran and many hadiths. There is no current Imam in Bahai faith.
(5) Bab and Baha'allah were not related closely by kinship which violates the rules of God in that regard pertaining to succession.
(6) Similar to the above point, the offspring of Baha'allah didn't continue the mission and so there is no real form of Ahlulbayt in the sense of having Successors add up to Twelve and a chosen kinship to continue the mission of the founders.
(7) The final Messenger (The Mahdi per hadiths) per Quran would be sent universally that every city will be tried with him and there is potentiality that every city is destroyed before of day of judgment. See Surah Isra.
(8) The finality of Mohammad (s) in terms of Nabis is narrated from the Imams (a) in many hadiths.
(9) Mohammad (s) and his family (a) being the best of creation is narrated a lot in hadiths and verified in Quran. God always replaces one Ahlulbayt by a better one, but there can't be any better Ahlulbayt (a). Therefore we can conclude on the basis of this that these are the final chosen ones sent to mankind.
(10) The Bahai writings are no where on par with Quran in any field.