Is there some independent verification, such as a different South Australian "Copy of Registration of Birth"? Someone had posted that the one everyone has copies of was only posted after the "Orly" Kenya version was put up, and then was promptly removed supposedly because the site was getting overloaded.
Absent definitive verification of the original documents, both BCs could be considered suspect.
However, I think that at this point the preponderance of the evidence points to a conclusion that the Bomford BC was used as a template to forge the “Republic of Kenya” BC.