But you don't know who the perp was. How can you compare him/her to the Rams if you don't know who s/he was?
The RN was completely bogus. Not only was the perp not in possession of the child and thereby unable to make good on any threats, but s/he wasn't actually interested in the ransom they claim to be doing this for.
Everyone who commits a crime has to start somewhere. IMO, the Ramseys started with their daughter. Someone was molesting JonBenet. I'd think it was a family member, and that person was commiting a crime by making JB their sexual plaything. Whoever was doing that to her seemed to have no trouble hurting a small defenseless girl by sexually abusing her to the point of strangling her as part of the "game." That "game" turned lethal by accident, and turned the molester into an murderer.
Now how likely is it that this perp - the molester turned murderer - is someone other than a Ramsey? Who else would be able to get to JonBenet in order to be molesting her, not just the night she died but times before? I think the medical evidence from Dr. Beuf supports the theory that JB had been being sexually abused for a while despite his denials. That was someone close to her. Who other than a Ramsey is going to feel comfortable enough to be in their house prowling around molesting the child and writing and re-writing the War And Peace of ransom notes? Why didn't the "foreign faction" target Burke also or instead? Why didn't they take JB with them, and collect the ransom for her body if that was their goal? Why would an intruder care if JB is dressed or naked, and why would s/he go to the trouble of wiping her down and redressing her, tucking her in a comfy blanket? Killers and kidnappers don't behave the way the killer/kidnapper did, and innocent parents don't behave the Ramseys did either. I'll never be convinced anyone other than a Ramsey had anything to do with this - certainly not an intruder, and certainly not any pedophile ring or cult following.