Whether it's fun or not, can we now agree that there is no point in using the cloud to make games 'better'. I really don't see much happening in Wrecking zone that can't be done without the cloud. The debris doesn't affect players so there is not even any reason to keep it synced or have the server calculate it all.
To make it impressive the cloud has to send a lot more data to the console, and then the console still has to process and render all that data. Most of it is time critical. You might as well run the whole game in the cloud which is where we are going to anyway :/
It looked quite laggy already on the IGN video, yet I'll wait for a better analysis from DF. The power of the cloud is the most unimpressive stuff this gen.