If Move needs the EyePet camera (which I heard it does), then what is it for? I mean the Wii motion controls don't need a camera, so why would Move need one?

Wii needs Sensor Beam

Move needs Camera for same thing and others (voice, facial snapshots, ...)

it tracks the user. it has a mic. tracks the ball, and overlays images onto the ball in virtual reality and augmented reality.

Well what does the Wii sensor beam do then? Can't it do those things?

Its not the EyePet camera, it is the PS Eye, though I am fairly certain any webcam would work

Anyway, the Move works by tracking the light ball on the end of the move to give more precision especially in the Z-axis I believe

the wii does need a camera...it's just that move is the reverse set up.

wii has an IR bar under your TV that a camera in the wiimote uses to keep track of it's position.  the sensors in the wiimote have an error and without the IR camera over time there will be error in the signal that to the user feels like lag or imprecise controls.

Move is the same except in reverse .  the move controler has a light source that the camera picks up.  the biggest reason why move has so much more precision is that in this reverse setup there are much less occasions in which the camera can't see the light source.

...also, eyepet uses augmented reality as in it takes a picture of you and puts it onto the screen and overlays the pet onto your image.  you have to have a camera to see what is in your room.

Ahh... that makes sense! Are you sure that Wii has a camera and that a camera is needed for this type of motion controls?

It can also do full body mapping but not as effective as kinect....although some ardent supporters would say almost as good as, but I seriously doubt that.

Move is far more than just the wii remote and the PS eye (toy) proceeds both kinect and the wii remote so why not use it?

Is there a difference?

That question actually only makes sense if you believe the usual Sony-hater bullshit that PS Move is simply a copy of the Wiimote.

It isn't - Move was always meant to be a combination of a motion-sensing controller like the Wiimote and a camera/microphone like Kinect. It combines the best from both worlds and adds the glowing ball for precise tracking in space.