Why did the Gamecube fail?

[Leynos]

curl-6 said:

Leynos said:
Another forum I frequent they test the PPS on 6th gen console minus Xbox. I believe Rogue II pushed Gamecube the most at 9 million PPS.

I can't find a source still live today, but I remember reading back in the day that Factor said they hit 20 million polygons per second in Rogue Squadron III.

Maybe untextured and no logic or lighting and such but otherwise no.  Not in-game.