The ZT60 does beat out my Kuro (non-elite), by a decent margin.
Big difference between a standard Kuro and an Elite. The problem with the 9th gen standard Pioneer's is that they removed a lot of the picture controls that the 8th gens had. As a result, the black levels are great, but a lot of the details are lost due to not being able to dial it in. My in-laws have a standard Pioneer (5020), and while the black levels are great, it lacks a lot of detail. Kind of irritating.
As for the black levels, the ZT60 is just about on par with the best Pioneer plasma produced, the Elite 101 and KRP-500m. Both of those were consider 9.5 gen Pioneer's with slight deeper blacks than the 9th gens. Down side, they were only 50" sets.
But black levels aren't the end all be all of plasmas. Most magazine just focus on BL, but Pioneer also had fantastic tech that just about prevented IR.
Extremely IR resistant displays. They also had some of the lowest input lag of all display tech. You didn't even have to put it in "game mode". Just set it and forget it for pretty much any content.
But that is what Pioneer excelled at, creating the best displays, bar none. They were so far ahead of the game, it took Panasonic 5 more years to almost catch up to them. But that is also what led to their downfall. People didn't want the best displays, they wanted good enough. Why do you think Vizio is doing so well? Do they have the best displays? No. They have, big, cheap, good enough displays. And that is what average Joe wants.
Sorry, I don't want to keep going on about Pioneer. It's just a sore subject for me. The ZT60 is also a fantastic set. If you haven't had it professionally calibrated, I'd highly recommend it. It will bring out every bit of performance the set has to offer.