Nintendo VS. Playstaiton

According to toys “r “us they are planning on selling the 20 GB version of t he ps3 for $499. According to KBtoys the Nintendo Wii is going to hit stores selling for a mere $250. Both systems are going to have the latest technology in the gaming industry. The Playstation 3 is more geared to graphics and the in-depth details of their system where as the Nintendo Wii is directed towards the user Iinterface incorporated into the games, but why does the Playstation cost so much more money than the new Nintendo? The Nintendo focuses on using two hand held devices that relays the movements with the devices back to the game counsel and causes the characters to react, so why is the demand for the Playstation 3 so much more than the Nintendo Wii? The Playstation has already sold its first shipment of 400,000 devices through pre-orders, yet the Wii is nearly unheard of. Both have breaking edge technology. Is it because gamers are simply used to sitting into a chair playing their games rather than physically moving? And if there becomes a shortage of the Playstation 3 devices during the holidays will this cause the demand for the Wii to increase? Is nintendo simply thinking that since their system is cheaper and makes itself available to a larger market that it will sell more product creating more reveue. Or is playstation thinking that that the demand for their system is so high that they will create the most profit by selling their product at a price of 499? Who wins?