All these numerological predictions are based on the error ridden 66 book King Kames Bible. The original canon confirmed in the 4th century Synod of Hippo had 74 books. Martin Luther, pompous ass he was, removed 7 Old Testament and 4 New Testament books. Though his successors added back the NT books bringing the number back to 27, they still have a Bible 7 books short of the original canon.
So the question is, how can Protestant nutjobs concoct numerical prognostications on less than the entire Word of God?
While I will agree that the KJV is probably the poorest of the modern translations of the Bible, it also is the one that has proliferated in the Western world, thanks mostly to British colonization and influence, you are incorrect as to the source of the OP's data.
The study in question is a Rabbinic study and the source material used is the Hebrew Bible, or Tanakh, which you are aware is the source material for many of the Canonical translations. The author of this Gematria study is a Rabbi, and the methodology is conversions of words/phrases into Hebrew letters, which in Biblical times, were also used as numbers.