@bd00 Hehehehehe.
Good questions @Kriven. I'm honestly not entirely sure what would be best, so it's up for discussion. In general, I would think that if a Japanese version of a console plays the same games as a US version, then I'd call them the same console with different names. But of course that can be questionable.
Per release date, I'd probably use the first, global release date. It's all up for discussion though.