Your figures don't refute Cashmonee's argument. The original mac only iPod didn't sell well, and it would have been statistically impossible to achieve a > 3% marketshare.
Having said that, the first gen iPod was sold as a Mac+PC version, so it's possible that you are both right.
Again, what is "not selling well?" It seems to be a successful product, that increasingly became more successful due to improvements in Apple's business strategy.