Yes pretty much. Superior courts do not reexamine witnesses or take new evidence (other than in exceptional circumstances), they go off the transcript of what occurred in the trial and for that reason are always very reluctant to simply second guess juries, who have had the significant benefit of eyeballing witnesses and observing their demeanour up close. Based on the (limited) reporting of this case the jury clearly believed the prosecution witnesses. It appears they were not contradicted by any other evidence aside from Manase's own evidence, which even some Manly fans here found very unconvincing.
If the Court of Criminal Appeal even decides to hear the appeal it would be many months before that happens, in the meantime Manase will be sentenced and I expect will await developments from inside a jail cell.