If that isn't what you meant, then you need to write more clear. Because that is what I think anyone would get from what you wrote.
lets break it down.
Whoever heard of a Buddist, Muslim or Pagan exorcist casting out anything?
Here you state that it is ridiculous to think those groups could cast out demons.
The next sentence seems to say why it is ridiculous.
As per the NT, Jesus said demons will not cast out demons.
Cause they are demons. That is what those sentence say when read together. If you meant something else you should hae written something else.
Oh btw, still waiting for the historical records you mentioned.
Facts don't lie or have an agenda. Facts are just facts