Actually, any arguement used against the Torah doesn't bother me. We Jews are commanded to challange and question everything inlcuding what is in the Torah.
The differnce is that we have answers to the questions. Including the ones of who witnessed various events and how they are established historically.
For example:
- The Israelis who received the Torah have descendants who are still existing today. There is no problem there. If we want to compare that to the original Jewish Christians - the original Jewish Christians left no clearly indentified deescendants and their movement completely died out in the Jewish world within 2 generations. So on this point there is no comparison.
- The text of the Torah that was transmitted to Israel is was not done so anonymously like the gospels were. The claim of Torah authorship to Moses comes from within the Jewish nation and not external to it. The only claim that identifies the auhors of the Gospels come from the Church Fathers. They themselves were not Jews and did not have accounts of receiving them from Jews.
These two issues are more than likely perfectly acceptable to Christians; that is not my arguement. Christians have standards special to them which they are free to have.
These standards, of Christian origin, are not acceptable to Jews and Noachides because Hashem commanded Jews and Noachides to stay away from that kind of record. So, if for you the Torah and the NT are equal to each other then that is something that is for you. It is the kind of thinking that Jews and Noachides were warned by Hashem to stay away from.