No, I do not think that the prophecies prove that the Baha'i Faith is right. I believe they are evidence that help to prove that.
evidence: anything that helps to prove that something is or is not true:
I understand that you believe, but just because you believe that something is true, that doesn't mean that it's true. And I'm not talking about your religion here, I'm referring prophecies as evidence. It's not evidence. It does nothing to help make the religion any more right then if there wasn't any prophecies. Having evidence that proves the existence and life of
Baháʼu'lláh are not evidence of your religion being right. It's just the same as Christians arguing that a historical jesus is evidence for christianity. Here's the most important thing about proving a theistic religion being true, it's harder than proving that god exist. The reason for this is because it actually goes one step further. God is one step closer to your religion being true, but even the existence of a god is not evidence for it. You always say that the messengers of God are the evidence for God. But you're wrong about that. So,
Baháʼu'lláh being a messenger of God, is not the evidence for God. It's the evidence for your religion being true. Even if we can prove the existence of God without a shadow of a doubt, that doesn't get us any closer to determining your religion as true. That God could exist and not having any messengers at all. Same as for Jesus. Proving his existence and miracles being genuine is not evidence for christianity being true, until he is proven to be a son of a god.
Quantity of evidence is irrelevant, in the sense that, a one peice of evidence could be sufficient enough to prove a claim, or it might need ten pieces of evidence. "Strength" of an evidence is not dependent on the particular evidence itself. Something is either evidence or it's not. What a lot of people get confused with, resulting in misunderstanding what "evidence" actually is. Evidence is dependent on the claim. Like in that definition, it must help prove that something(the claim) to be true or not. If it cannot fit that standard, then it's not evidence.
So back to the
Baháʼu'lláh religion, prophecies regqrding
does nothing to
Baháʼu'lláh, does not, in any way, help "prove" the existence of God.
The existence of God must be proven before the evidence for
Baháʼu'lláh being a messenger.