How is the Bible unique in its narration? Yes, it's a different story than the others; they are all unique after all, but it has several elements in common with the others. It's narrative tools are also nearly identical; it's literally a story with description and dialogues and even characters who face challenges and dramatic situations.
PS: what would you refer as the modern day myth of creation?
Creation
...further discovery and research have merely made apparent the great gulf between the two accounts [Babylonian and Genesis]. They do not parallel each other. Wiseman quotes The Babylonian Legends of the Creation and the Fight Between Bel and the Dragon, issued by the Trustees of the British Museum, who hold that “the fundamental conceptions of the Babylonian and Hebrew accounts are essentially different.” He himself observes: “It is more than a pity that many theologians, instead of keeping abreast of modern archaeological research, continue to repeat the now disproved theory of Hebrew ‘borrowings’ from Babylonian sources.” — Creation Revealed in Six Days, London, 1949, p. 58.
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Regarding ancient creation myths in general, it has been stated: “No myth has yet been found which explicitly refers to the creation of the universe, and those concerned with the organization of the universe and its cultural processes, the creation of man and the establishment of civilization are marked by polytheism and the struggles of deities for supremacy in marked contrast to the Heb. monotheism of Gn. 1-2.” — New Bible Dictionary, edited by J. Douglas, 1985, p. 247.
Book of Genesis
Genesis is the only source known to humans that provides a logical, coherent history of things back to the beginning. Without its factual history of the first man and woman, we would be left with the fanciful stories or allegorical explanations of man’s beginning that are found in the creation accounts of pagan nations. A comparison of the book of Genesis with the pagan creation accounts clearly demonstrates the superiority of the Bible account.
Not one of such ancient sources furnishes us with the history, genealogy, and chronology that the book of Genesis provides.
Babylonian myth
Marduk used a net, a gift from Anu, to entangle Tiamat; Tiamat attempted to swallow Marduk, but 'the Evil Wind' filled her mouth. With the winds swirling within her she became distended – Marduk then fired his arrow, hitting her heart – she was slain. The other gods attempted to flee but, Marduk captured them, broke their weapons, and netted them. Her eleven monsters were also captured and chained; whilst Kingu was taken to Uggae (the Angel of Death), the 'Tablet of Destinies' taken from him. Marduk then smashed Tiamat's head with the mace, whilst her blood is carried off by the North Wind.
Marduk then split Tiamat's remains in two – from one half he made the sky – in it he made places for Anu, Enlil, and Ea.
How does stories like that compare to Genesis?
Genesis 1 tells us simply, God created the heavens and earth. It says there was light upon the watery deep which covered the entire surface of the earth.
Trees and plants with seed grew.
Animals with regenerative powers were created... etc. etc.
Sounds like reality to me. Rather than the myths today that present stories like...
The giant-impact hypothesis
Why believe those stories? What makes them any different?