“No, he [Pontius Pilate] IS a saint in the Coptic Church - Rome does not find the evidence compelling.”
That would cause me to wonder if Judas Iscariot is also a saint in the Coptic Church of Egypt?
Judas did not repent - you are assuming the same is true for Pilate. The Coptic Church knew him well - - - I have no reason to doubt their decision.