Ian:
You don't see those game in the top five because the Cube userbase is too small.
If that was the case you wouldn't see XBox sales in there, either.
That's BS. I have tons of third party games.
As they say on Slashdot, "the plural of anecdote is not data". It means that your personal experience means nothing. Just because everyone you know uses Linux that doesn't make it the dominant desktop system. Just because every GC owner you know buys third party titles doesn't mean the majority does. There are many kids in those sales numbers, kids can only afford maybe two games a year, which leads to things like a low tie-in ratio. Often those two sales go to Nintendo (because, well, Nintendo DOES make some of the best games out there). Also, a lot of people own all systems and buy their cross-platform games for the other systems (because they don't like the GC controller or because they prefer to use theXBox's harddrive for storing saves instead of the GC's small memcards or whatever floats their boat), having the Cube only for the first party games and maybe a few exclusives (though those often go under the radar).