First we report that Square shipped 1.8 million copies of Final Fantasy X-2 to retailers for its Japanese launch, which seemed like a ludicrous number; now we hear they sold 1.2 million of them on the actual day. Good lord.
The amount of PS2s in the market was significantly less in 2001... the Magic Box lists 2001 sales of FFX amounting to 2.4 million, and that's over the span of the entire year. Hmm. http://www.the-magicbox.com/Chart-BestSell2001.htm