Ignoring the fact that you can't provide a source to support the 9 million number as end-user sales (or specifically, to refute the 3½ million channel sales that Apple is claiming as "incredible demand" when they're really "incredible strain on the shelves in the warehouses"), I'll simply point you at Gene Munster's (an analyst who's definitely a friend of Cupertino) opinion that
Apple Actually Only Sold 5.5 Million iPhones During Opening Weekend, Says Gene Munster.
If Apple says 9 million, and Gene Munster says 5½, I'll go with Munster. Apple has been lying for decades, and nobody but the fans believe them. Munster has some skin in it - and has much to lose if he's wrong.
Take off the blinders - the unbelievably good "9 million sales" is literally unbelievable - millions of those phones are sitting on shelves because the buyers don't want them.
Apple fans have often held the belief that "Apple counts end-user sales, Samsung counts shipments to channel". The truth is that both count shipments to channel - and the channel is full of Iphone 5C boxes (although yellow seems to be rather popular, so the shelves may be straining under the weight of the other anemic colors).