You're absolutely right. In these situations, usually the big corporation outmuscles the little guy in court. However, if they're at trial then they've made it past the discovery phase of the litigation, so whatever paperwork WB was supposed to fork over they've done it already unless more new stuff comes up.
I know the Wachowski's are sweating bullets. That movie made maaaaaaaad loot, and if she wins, she will be entitled to a very large piece of that pie.