Power only interest fanboy for bragging.
What's actually matter is the gamed. As long as content is here the console will sale. Look about the releases on the wii and its sales for the last 2 year... No games = no sales.
Also now most of the engines are scalables from smartphones to high end pc so ddifference of power won't be too much as a trouble i think.
But we must first concentrate ourselves on the way to entertain people, for video games to live. Else, it's a world where sales representative will win, which has as effect to kill creativity. I want to say to the creators all around the world:"Courage, Dare!". Shigeru Miyamoto.