The gems of Revelation 21, page-232

Different understanding of Jesus' divinity, While Baha'u'llah revered Jesus as a great prophet and teacher, he did not believe that Jesus was fully divine or eternally begotten. In contrast, Christians believe that Jesus is fully human and fully divine, and that He is eternally begotten of the Father.

This sounds like the view that Islam has on the nature of Christ which is not surprising given that the Bahai faith has its origins in Persia - now Iran - an Islamic country.
This is an example to support the claim that Baha'u'llah had nothing new to offer.