What is the test for overturning a jury's verdict in a sexual assault case?

the trial court is to be 'guided' by a presumption in favor of the correctness of the jury's verdict [citation], this means only that the court may not arbitrarily reject a verdict which is supported by substantial evidence. The trial court is not bound by the jury's determinations as to the credibility of witnesses or as to the weight or effect to be accorded to the evidence. [Citations.] Thus, the presumption that the verdict is correct does not affect the trial court's duty to give the defendant the benefit of its independent determination as to the probative value of the evidence. [Citation.] If the court finds that the evidence is not sufficiently probative to sustain the verdict, it must order a new trial. [Citations.]" (People v. Dickens (2005) 130 Cal.App.4th 1245, 1251-1252.)