Perhaps you would like to attempt those questions instead? Those passages above indicate that Gentiles also need to repent, that Gentiles should also be baptized, and that the Jew likewise needs the death, burial, and resurrection of Jesus Christ. That pretty much erases all the distinctions Bright Raven defined between "two" gospels.
Acts 15:7 KJV
(7) And when there had been much disputing, Peter rose up, and said unto them, Men and brethren, ye know how that a good while ago God made choice among us, that the Gentiles by my mouth should hear the word of the gospel, and believe.
Notice that Peter doesn't say "their own gospel" or "a different gospel" but refers to "the gospel" as if this is the same gospel.
Acts 15:8-11 KJV
(8) And God, which knoweth the hearts, bare them witness, giving them the Holy Ghost, even as he did unto us;
(9) And put no difference between us and them, purifying their hearts by faith.
(10) Now therefore why tempt ye God, to put a yoke upon the neck of the disciples, which neither our fathers nor we were able to bear?
(11) But we believe that through the grace of the Lord Jesus Christ we shall be saved, even as they.
I'm afraid that blows "two different gospels" out of the water right there. God put no difference between the Jew and the Gentile, and Jews shall be saved even as the Gentiles, through the grace of Jesus.
And yes, GM, bible read cover to cover multiple times, King James, even the "boring" parts of genealogy, even the long words.