LOL, Squarepusher is definitely not a PS3 fanboy. I don’t think he has any one favorite platform, but you could always come to IRC and ask him.
360 development is ongoing and it should be a good release when it comes. Square overhauled the menu system recently to make it work more like the other platforms, and he mentioned that shaders will be back in a limited (i.e., constrained by the hardware) capacity.
N64 isn’t likely, as it would require hooking in another dynarec, which is quite a bit of work. There apparently is a PPC dynarec available, so I won’t say it’s an impossibility in the future, but it would definitely be low-priority.
The 360 and Wii releases are both clearly in high demand, judging by their respective threads. Unfortunately, they both have some pressing issues that need to be addressed before a proper release can happen, or else some very core functionality would be broken.