I agree with Matt - The difference appears to be the manner in which the wires are connected to the ESC.
That's the first ESC I've seen with that plug type connection. It seems that I'd be easier to change wires when necessary, rather than sending it back to the factory as they suggest with the other one.
I and everyone that I know that has/have tried one really likes them, especially the Zero Extreme. In the US I've heard of the prices ranging from $175 - $200. I bought mine from a local hobby shop, so you can guess that it wasn't $175.=)