Maybe you didn't read what I said in response to you above. It's my understanding that the Cryptonote developers and the Bytecoin developers were the same people, when the coin was being developed. I think that they may have formed separate teams now though. I haven't seen anyone claim that the Bytecoin developers didn't make the codebase before. I could be wrong as I don't know the history well. If you are right about this prove it to me.
The best thing for you to do is checkout the source code at that June 29th commit and see if they attribute anything to the Bytecoin developers. You will see they do not.
Q: Are CN and BCN developers the same people? A: Cryptonote's developers repeatedly refer to Bytecoin's devs as "them" and also indicate that they used to collaborate closely on the earlier stages, but currently two teams don't have direct connections [5].