Just as one must already be a Jew (or a Noachide) to believe that the Torah is preeminent.
You really insist on continuing this argument forever? That's your prerogative.
The Torah was given on Mt. Sinai and was recognized as the Word of G-d before chr*stianity ever existed. The claims of chr*stianity, and of any other alleged "higher" revelation, must be measured against the criteria (if any) set by previously recognized revelation. It can't come simply out of the air, however "poetic" it seems.
I have long observed that Catholics invariably attempt to prove the falsity of Protestantism by simply pointing out that Catholicism is older. If you're going to pull the chronological argument out with the Prots, it's inconsistent to suddenly shelve it with regard to Judaism. And if the chronological argument is fallacious when offered by Judaism, then Catholics are going to have to stop invoking it in their argument with Protesants.
Chodesh tov.