You are saying, for example, Christ means annointed one. Bahaullah is the annointed one. So Bahaullah must be Christ.
I'm saying because christ is an actual person regardless of what he is called, he is distinct, had distinct mission, prophecies, etc apart from Bahaullah the person. You are looking at meaning but the physical part has to be there too or you can connect meanings of names with any religion and it would fit under your religion. In other religions, that is false and if you want these religions in your faith, you have to accept what you believe about them is not what they teach themselves.
The Manifestations of God have a twofold nature.
1. Distinct Individuality
“each Manifestation of God hath a distinct individuality, a definitely prescribed mission, a predestined Revelation, and specially designated limitations. Each one of them is known by a different name, is characterized by a special attribute, fulfils a definite Mission, and is entrusted with a particular Revelation.”
2. One and the same Person
“Inasmuch as these Birds of the Celestial Throne are all sent down from the heaven of the Will of God, and as they all arise to proclaim His irresistible Faith, they therefore are regarded as one soul and the same person.”
3. Each are the return of all the Prophets
“If thou wilt observe with discriminating eyes, thou wilt behold them all abiding in the same tabernacle, soaring in the same heaven, seated upon the same throne, uttering the same speech, and proclaiming the same Faith. Such is the unity of those Essences of being, those Luminaries of infinite and immeasurable splendour. Wherefore, should one of these Manifestations of Holiness proclaim saying: “I am the return of all the Prophets,” He verily speaketh the truth.
4. They all are the return of all the Prophets
“Thus hath Muhammad, the Point of the Qur’án, revealed: “I am all the Prophets.” Likewise, He saith: “I am the first Adam, Noah, Moses, and Jesus.”
Bahá’u’lláh.