I'm not sure how this can be considered a win, the FBI has been combing through that data for months. I mean, who cares if they have to give it back now? They already went through all of it. By the way, who decides what is or is not "directly related to the ongoing prosecution?"
The New Zealand High Court has ordered the police to inspect all digital information illegally seized last year from Kim Dotcom’s mansion, and return everything not directly related to the ongoing prosecution. The judge further ruled that the FBI must ship back cloned drives that were sent to them, and destroy all copies the U.S. Government has archived.