Hm, on a darker note, I've heard tons of people say;
The controller doesn't make the game.
Its true, the Wii has a controller on everyone else, big woop, PS3 has motion sensors too lol, not as advanced, but again the controller doesn't change the game so there you have it folks, thats not just a statement by me its been said all around the board, and if you think about it, you'll know it makes sense. So in assuming that we see that gamewise-console: it should go to PS3. When you factor in price it does impact a bit, but when you factor in time it softens that, and when you look at the fact that while they could do some improving with Wii, they couldn't do as much as they could with PS3, then overall the best choice is PS3.
Hypothesis wise, you can form around PS3, but Wii you're just guessing. Without Sqaure, there is no KH, and after Square saw Nomura change the battle systems with KH, do you really think they'll take the risk of letting him try a whole new format? They could, but its not likely. There are no inferences that suggest a Wii release of the next game, only that Nomura was interested in it, and thats totally subjective. Any Game Designer is usually interested when a new console comes out with a different format, and we could easily assume that his interest was in converting previous games like KH1 to the Wii, seeing how it does, and then make the move for another KH release on that console. That would be the SMART thing to do.
Well there ends my ranting. If you're gonna pick that apart, make sure you do all of it, k? Thanks