I don’t read anything about Talmudic laws taking precedence over the Christian New Covenant. Its not in the New Testament.
What is this, some sort of gimmick to have Christians render preeminence to Judaism? Sorry, I see Jesus Christ as superior to both the Mosaic Old Covenant and the Talmud.
The first so-called commandment listed here for us Gentiles forbids idolatry. Well, good. As a Christian I am against pagan idolatry too. But I am made to wonder whether or not they include the Christian worship of Jesus as idolatry.
If a Jew regarded Jesus as the Son of God, they would by definition be a Christian. So to a Jew, it would be a violation, but from the Christian perspective it would not be a violation.
Regardless, Christians have the Gospels as their guidance
8 Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things.
Philippians 4:8
Please note that Paul did not qualify this with: "but only if it comes from a Christian." Paul knew that truth is truth whatever source it comes from. To my mind, these Seven Laws serve to confirm that the Ten Commandments are God's word and law. There's no question or even hint of "pre-eminence" of one over the other, it simply is true.
Remember, the Ten Commandments are in the Old Testament. We still live by those. The Lord's New Covenant fulfilled the old law, it didn't obliterate it. Christ gave us a higher law. But this higher law has many things in common with the older, preparatory law. And why shouldn't it? It came from the same source! God was teaching the children of men line upon line, precept upon precept until they were ready to receive His higher law.
The Old Testament is still part of our Bible because it gives us perspective. It contains truth that we can learn from and live by and gives us an understanding of how God works. Again, in my opinion, this is merely a second source that confirms that the Ten Commandments came from God and, personally, I think that's cool.