9 million iPhones is not so impressive if you consider that 1.5 million Android phones are sold every day on average. And only the ones registered at play.google.com are counted.
So 9 million iPhones on the first weekend is six days of Android sales.
But this was the weekend when the hyped iPhone was first sold. Later the numbers will return to normal figures. And there Apples iOS will remain a solid number two in the market.