While I wouldn't have expected them to come back today at all, I honestly think a shorter deliberation would be less positive for Depp?
I mean, this is just how my brain is processing it, so I could be totally wrong lol, but I'd think if it's quick, it means they don't buy his story so they're going to dismiss his claim and get it over with, maybe deliberate to see if they think Heard gets anything for her counterclaim.
If they deliberate longer, they're actually thinking about "can this pass the high bar for defamation", the law behind it, what, if anything, Depp should get, and then moving on to see if they think Heard gets anything as well, etc.
So…while I'd usually see a quick deliberation being a good thing for the Plaintiff/crown/state, in this case, I think a fast turnaround would be less positive.