now we know all three:
microsoft has by far the best going by the tech demo, true it has no controller, they could easily implement one
that would require a camera + controller
sony using the ps3 eyetoy already, if dont need to buy one if you own one, need the wand, and it has buttons
nintendo, after all this, by far has the less impressive technology
what makes microsoft and sony better, their machines just has the horsepower to process the images from the camera bypassing special equipment needed to motion sensing (though the wand does have accelerometers)
with the camera system, it can sense 3d space, wiimote cant even with motion plus
looking now, the ir system is totally dated and a huge hassle, countless times have i had to move the sensor bar around because the sensor has gone out of range from wiimote (as in the ir camera)
the only thing nintendo can do at this point (in my opinion) is to get as much units out as possible before microsoft and sony releases theirs (which both as no date) before consumers see how much crappier their technology is