All these ‘prophesies’ would be terribly impressive if one assumes, as Christians do, that the ‘New Testament’ is some kind of accurate account.
If one doesn’t assume that, if one thinks, for example, that the ‘New Testament’ is a pious fiction, all these ‘prophesies’ are fulfilled merely in the way the story is written. In other words, ‘only begotten’ (taking an example from an earlier post) merely because it appears in the earlier text.
In other words, it’s rather like saying that CS Lewis’ “The Lion, The Witch and The Wardrobe” has parallels to the New Testament. That would be terribly impressive if it were an accurate history of a lion, a witch and a wardrobe, rather than a book written to have such parallels.