On the back of the Rock Band 2 box for the Wii it shows a picture of a Wii Remote with a number 2 on it. This normally means that the maximum number of players for the game is 2. However, Rock Band’s big feature is the fact that you can play with up to four people. Can you only play with up to 2 people on the Wii version? Is this a typo? Or is there some other explanation?

 How many Wii controllers is the maximum on Rock Band 2 for the Wii?