Let us say that it is a doctrine that you do not like. Galatians 2:7 show the difference between the ministries of Peter and Paul, one to the Jews, the other to the Gentiles. A gospel to the circumcision and a gospel to the uncircumcision. For it has already been shown that the Jew was saved through repentance and baptism (Acts 2:38) and the Gentile through the DBR of Jesus (1 Corinthians 15:3-4).
You are misinterpreting Acts 2:38 just like UPCI (Oneness) does.
Gal. 2:7 is a demarcation of ministry, but you wrongly proof text KJV at the expense of understanding Greek genitive (cf. other English versions).
I cannot help you. I doubt you really understand MAD in light of more credible views. You have stumbled on a simplistic system that claims to resolve problems, but it is not based on sound exegesis/theology and creates more problems than it solves.