Not necessarily. Android is one of Google's primary vehicles to deliver mobile ads. Those have fabulously fat profit margins.
But we can reasonably expect they pay something (cite: the Mozilla deal = $300M in 2013) and iOS is worth a lot more than that.
Given the economics and the relationship between Apple and Google it doesn't seem an impossible number.
It would be great if you could provide a better number rather than that somewhat critical comment.
Exactly right, even if Oracle is including mobile ads the margins make no sense