Again, that would make sense if there was any evidence that it has ever mattered one iota. It hasn't (your Gamecube is a good example - its technological parity did it a whole lot of good, no?).
There's no indication that consumers care about "power," or more accurately they do so in numbers large enough to affect the system's sales. It's been over two and half years - trust me, people know that graphics aren't a selling point of the system.







