The articles you posted are from 2003 and 2002. The other post was from kingsnake.....who knows how old that is. The most recent molecular evidence splits the animals as I have said.
But who cares. You are going to believe what you want. It is obvious you don't want to deal with facts and want to act like a big shot. I don't care honestly. Believe what you want. The rest of us will rely on facts. And again you are getting hung up on common name crap. Just because you have 2 bull snakes doesn't mean you know all of Pituophis.
But keep arguing.