When God himself created the Gamecube, he made it so powerful that only a handful of titles would show what it was capable of. He saw that this was good, and the world was at peace.
And when the humans became restless for a "next-generation" console, God took a hard look at his masterpiece. Perfection was not something easily improved upon, so he saw it fit to make his next creation almost a full 2x as powerful as the Gamecube. The masses wept at his feet, and bought this divine gift in droves.
The world was once again at peace, as Nintendo was restored at it's mighty place atop all video game charts far and wide.