[quote name='Metal Boss']I have to question IGN's assertion that it is just 'simulating' a lightgun.[/QUOTE]
There's nothing to question. A real light gun sensed light emissions from a CRT tv, and thus had true 1:1 aiming.
With the wiimote, all it does is sense emissions from the sensor bar, so you're just moving the cursor around on the screen--it isn't true 1:1.
Same with the new guncon for the PS3. It's just the way it is in this day and age, since SD CRT TV's are a dying breed and traditional light guns won't work on other types of TVs.
Thus the best that can be done is to simulate light guns buy using external LEDs (like the wii sensor bar) and a light gun/wiimote to pick up that signal and aim a cursor on the screen.