akuperma: There’s several problems with what you espoused. First, dina d’malchusa does not override halacha, when halacha is different than secular law, when it pertains to matters between yehudim. Secondly, and even more important, Jews are generally prohibited from using secular courts and are obligated to rather use beis din. This prohibition is applicable even if both Jewish parties to the case agree to use secular court rather than beis din. And another Jew cannot be party to the process of other Jews violating this severe prohibition.
Also, how the “facts” are determined in a secular court differ with how the facts are ascertained in beis din. (i.e. admissible evidence, testimony, witnesses, etc.)