Uhh...if we go by price alone, the Wii is the closest to the $200 price point needed for sales to take off (relative!) The PS3 is the most expensive at $400/500 and will be the last unless Sony does another crazy price slash to $200/300.
Of course this assumes everyone who's buying a Wii now would buy a PS3 if it were at the same price. Anecdotal stories say no.
There is no such thing as a console war. This is the first step to game design.