The difference is, that iOS devices have a much stronger bounding to Apple and can be put in direct revenue numbers. For Google, the royalties and sales shares

The difference is, that iOS devices have a much stronger bounding to Apple and can be put in direct revenue numbers. For Google, the royalties and sales shares of the platform is not as important as having it out there, seamlessly integrating into their online offering. As such, they don't even have these numbers, they just see how many people connect. For them it basically means: "we have 300k more people every day who are surfing our cloud".