I wonder where that came from, "1:1". 1:1 would mean that if I moved the controller the shortest possible distance in the universe in the shortest possible time unit, it would accurately interpret it. Which is clearly nonsense. For instance, if I moved the Wii Motion Plus controller 1 micrometer in 1 nanosecond, it wouldn't pick up anything. So it's not "1:1". It's all a matter of scan-rate and accuracy.

And now for the main difference between Sony's motion controller and Nintendo's: Sony's is able to determine its position in three dimensional SPACE! So it's 3D, not 2D. All Nintendo's motion controller does is determine a position on a two dimensional PLANE. It's not even in the same leauge. The principle behind the Wii remote is basically the same as a lightgun, which has been around for 40 years (with the added ability to sense tilt/rotation). 3-dimensional motion control opens up a whole new world of possibilities.

i won 't tell before I see a game in action and not judge from a demo showing in E3

This thread needs to be put on hold until a full demonstration of the Ps3 Motion Controller can be shown with a tech demo and a game by a 1st/3rd party.

You obviously don't know how the Wii Remote works as it can determine 3D positioning.

I'll expand.

The same way that the PSWand uses the camera to determine depth (size of the glowing orb thingy), the Wii Remote uses the IR sensor to determine depth (distance between the two IR signals on each side of the sensor bar). Both controllers essentially do the same thing using a different method. The Wii Remote can't constantly watch the sensor bar (as you point away from the screen) but every time you point at the screen it can be recalibrate.

So is that...like almost being a usable depth sensor for games? If you have to point it toward the sensor bar for depth I'd assume that sort of eliminates most needs for depth sensing in games.  I'm not seeing that as the same way the Wand/Arc/PS3MC determines depth.   Or at least the same functionality.

dmanyouall - Wii remote works in 3D space. Try playing Wii Play, and use the Pool game, it works on an xyz axis - up and down, left and right and forward and back, aka 3D space.

1:1 accuracy refers to where your hand moves the pointer goes, which WM+ excels at. So at best, the Arc can only do as good as WM+

it isn't the exact same way, but the same results can be acheived.

Let's say you point the Wii Remote at the TV when you are 10ft away. The system now knows exactly how everything is oriented. You then point the remote at the ceiling (with WM+ the system knows it is being pointed at the ceiling). You then walk 5 ft forward. Since the system remembers where you were and the orientation of the controller. It now knows it is 5ft away from the TV. There will be a bit of drift due to errors, but the next time you point the Wii Remote at the TV the drift can be corrected and everything is back to being correct.

While this is different than how the PSWand works, the same results are acheived, which is 3D Tracking. I'm not saying one is infinitely better than the other (I'm guessing the PSWand will work slightly better if Sony doesn't royally screw everything up), but I'm saying they both do the same thing, which the OP claims the Wii remote only works in 2D.

Arc will probably have less drift due to not having to wait for the user to point at the screen. Of course, the practical difference should be minimal, but it is really up to the implimentation of the programmers.

I'll agree with you, though i'll say that if Sony does theirs right, the depth perception would be much more usable in games than the Wii's depth perception which which is really only good for....Wii Billiards