@Puzzledandpissedoff on the costs point, that depends. Costs may be determined at this stage, or left to be determined later. It’s up to the court.
As for the different treatment of the hacking and the other illegal information gathering, the judge found that Prince Harry knew his phone had been hacked more than 6 years before he filed his claim. That was therefore out of time and the relevant sections of his claim were struck out.
The judge decided the evidence was less clear on the other things Harry was complaining about. He thought it was arguable that Harry had found out about them at a later date, so those claims could be in time. He did not decide that those claims are in time, just that they could be. So Harry gets to have a hearing on them, and in the course of that hearing both sides can produce evidence to show when he first learned of them. If they too are found to be out of time, Harry will lose on those too.