The thing is, you don't have to "point" to upper right corner in order to move there. A closer analogy is how the analog nub works. If you move the nub from the center, then the pointer in the screen moves to that direction. And how from the center you moved it determines the speed at what it moved. If you increase the sensibility in the game settings, the same movement with yields bigger on screen distances.
In the wii, if you move the control (camera) from the center, the cursor (and the camera) will move in that direction. Increasing or reducing the cursor and camera speed with yield different results from the same movement. So, a slow RPG would either, require bigger movements or move slower, than a hand gun.