Was the GC really more powerful? Didn’t the format of the disc hurt them?
Also I’ve always considered PS3 to be more powerful than the Xbox 360. Could have just been an assumption though.
The Cube was powerful, maybe not so much on paper, but it was much much easier on developers. In fact, the following console, Wii, was basically the Gamecube with motion control.
https://en.m.wikipedia.org/wiki/Hollywood_(graphics_chip)
The smaller 1.5GB discs were still sufficient for that era. Some of the best looking games from the gen game from Gamecube despite a lack of 3rd party software.
Similar story for the Xbox 360. The PS4 was better on paper in some ways, but the Xenos gpu was much easier to develop for. The shared 512MB ram also helped.