It's developed using Squares own tools on a PC. Dev kit are just PC's with emulators and tools for developing. The assets, art work, most of the code are standard 3d studio max or C/C++/whatever.
Crystal tools is probably a set of tools that streamline all this but also were built to turn these PC programs into 360/PS3 apps pretty easily.
I would cite regulation, but I know you will simply ignore it.







