Why did the Xbox outsell the GameCube?

[slab_of_bacon]

I bought an Xbox day one just because I had heard that it would be the most powerful console. I was highly uninformed because I assumed the Gamecube was weak and my interest in getting a new Playstation waned. I was very happy with the purchase especially because I picked up Halo when I bought the console. Again, I hadn't heard of it but the box looked like the kind of game I could play with friends, e.g. Goldeneye. I made the right choice but I wish I could have had Rouge Leader.