Let's say your belief is right there (which it is not ) the Bible goes on to say the Messiah would come AND gives the exact year he would arrive.(Daniel 9:24-26), Also from the OT book of Daniel are the empires that would rule the earth from the time of Babylon until Rome, written 600 years before Rome ever existed. The Roman Church is then found in Revelation before it ever existed.

The fact is nothing confirms the Sumer tablets. They are a fictional pagan account of the true biblical record compiled by Moses from tablets or some record handed down from the very time of Adam.(Wiseman Theory) Most who quote this Sumer tablet nonsense have no original sources and jumble up translations with Sitchen's fringe interpretation. They have no original source documents for the proper translation and do not even know what it says.

[link to creation.com]

The same critics use to also claim Babylon never existed, the only record of the empire was in the Bible. Then it was unearthed in Iraq.