i think it's worth distinguishing between obeying laws and behaving in an orderly way - the opposite of Lawful is not Criminal but
Chaotic. in this way batman is a paragon of Law because he never strays from his principles, ignoring lowercase-l laws entirely when necessary. i would also say he's Neutral or maybe even Evil - borrowing from another (superior?) Batman he is not justice, he is VENGEANCE; he is not the day, he is the NIGHT. he cheerfully hands criminals over to a justice system that notoriously employs the death penalty - he therefore doesn't think killing criminals is wrong per se, he just won't do it himself, and so he never does. a billionaire has any number of avenues to make the world a better place, punching the mentally ill is not high on any absolute scale of morality i know of.
in the same way, i'd argue Harvey Dent becomes a paragon of Law
after his fall - the capriciousness of a rule does not make it any less of a rule, and he honors the coin flip even at the cost of letting the men he hates most in the world live (the Joker and himself). by comparison the Joker is fully Chaotic - decrying schemers one moment, organizing Byzantine schemes literally the same moment; lusting for the Batman's death, promising to never kill him; robbing a bank, torching money. he's a dog chasing cars, yes,
and the car itself
there's also the lack of quantification to consider. for example, a pet classification of mine is Captain Picard as Lawful Good
and more Good than Lawful - he has a strict code of conduct including the Prime Directive
but he sees scenarios where it should(!!!) apply but doesn't (i.e. the Masterpiece Society) and scenarios where it does apply but shouldn't (i.e. Insurrection). he still lives in rigid order and so is Lawful, and he still pursues the right thing and so is Good, but inevitably those two will conflict - surely the inevitable choice of one over the other doesn't dismiss what came before, right? that's what i think, anyway
