And also
@ManSinha.
Mythology is different than symbolism of Scriptures.
Characters such as Zoro or Supperman, are mythology. The author of these stories did not intend to relay hidden or spiritual truth by writing these stories. They wrote then for amazement. (Nice stories by the way!)
But the Author of the Holy Books, wrote the symbolic expressions to relay an inner meaning which is hidden from the eyes of ordinary men. With those symbolic expressions, They prophesied of future Spiritual conditions of humanity.
Only God Himself can reveal their hidden meanings. As regards to your question, how did Bahaullah fulfil prophecy of 'Christ or Krishna on a white horse', I am unable to tell you its interpretation, as I did not receive inspiration from God. But Abdulbaha did! He wrote that 'white horse' symbolizes the physical body of the Manifestation of God, and the One who rides on Horse, symbolizes Spirit of God. So, the human body of Bahaullah, was represented by the white horse, whereas the Spiritual power of Bahaullah, represented as the one who rides the horse.