I think that nintendo doesnt mean 2-3 times more powerful in specifications but in in-game performance. For example developers who have made games (or are making games) for the xbox 360 have said it is only 2 times more powerful than the original xbox.If the revolution was 2-3 times more powerful than the GC (which was more or less equal to the xbox) than it would at least be on par with the 360.I read the 360 in an issue of gamepro but I can't quote them because it was my friends copy Ill try to get it and type it all up.
.