Paul preached Christ crucified, and that is the big difference. Please point out the changes in the gospel with biblical verses to support your charges, thanks in advance.
Amen. See Acts 15, where the issue was brought up regarding the requirement for the Gentiles to follow Jewish Law and where Peter defended faith alone.
And put no difference between us and them, purifying their hearts by faith. And 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. But we believe that through the grace of the Lord Jesus Christ, we shall be saved even as they. (Acts 15:9-11)
You need to read a little more than the banal phraseology constantly recycled in Christian communities.
I won't do your home work for you. If you want the truth, seek it, but you won't find it on a silver spoon. However, I will give you a few hints (believe me, there is a lot, lot more!).
The obvious issues are the law and circumcision. Christ never taught that it should be stopped or dropped or that they are "empty rituals," or that the gentiles should not be required to abide by the dietary restrictions, or not to be subject to God's laws.
Paul faced considerable opposition to his teachings from +James and his Jerusalem Church which the Acts tries to smooth and perfume to make it look like it was all resolved, when in fact it wasn't.
In II Cor 4:4, +Paul says that Christ is the "image" of God!
In Mat 6:25-34 Christ says not to worry about what we will eat, for God will provide if we seek righteousness of His kingdom. In II Thes 3:10 +Paul says "If a man will not work, he shall not eat."
In Galatians 2:15-16 Paul says that no one is justified by law (because no one can fulfill it perfectly...ts,ts,ts), yet in Matthew 5:17-20 Christ is quoted as saying "but whoever practices and teaches these commands [of the law and the prophets] will be called great in the kingdom of heaven."
If you look up what is Law and the Prophets, you will understand that it is what saves us.
Leave the banal commenatries aside. They are worn-out clichés or pre-fab 'catechisms.' Look up history, bible, facts and fiction, try to reconcile dinasaurs and cavemen with Genesis, and if you still believe, you will be ahead.