The jury was told there was a DNA match to Broughton, according to the article. What KIND of DNA match?

Not all DNA tests are created equal.

I would like to know how the DNA sample(s) in this case were tested. Were they a CODIS/ autosomal test? YDNA test? Or mtDNA test? How many markers were used? If a mtDNA test was done, was a full genome sequencing done?

Is it a CODIS test? The CODIS system has been tested and there are perfect matches within the database of different persons.

A study of the Arizona CODIS database carried out in 2005 showed that approximately 1 in every 228 profiles in the database matched another profile in the database at nine or more loci, that approximately 1 in every 1,489 profiles matched at 10 loci, 1 in 16,374 profiles matched at 11 loci, and 1 in 32,747 matched at 12 loci.

Is it a mitochondrial DNA test which matches everyone who descended from the same maternal ancestor in the last 20 generations as THE DEFENDENT(S)?

Is it a Y Chromosome test which matches everyone who has the same paternal lineage for the past 400 years?

There may be a way to combine all of these that will resolve the identity to one person, but is what they have beyond a reasonable doubt unless they do FULL testing?