You and I are both conjecturing. You found a metric to support identified items with no word on the methodology. Absence of evidence is not evidence of absence. Believing the worst of humanity rarely involves disappointment.
Except in this case, the show is on the other foot. The absence is your provision of proof that there are so many forests of pieces of the true cross.
Deception can go both ways. Logically, that is also possibility. Therefore, there is no proof to the opposite as well.