In this one case perhaps, but my point is that in general, iPhone developers are given "hard" limits on what they can do with the iPhone hardware and therefore

In this one case perhaps, but my point is that in general, iPhone developers are given "hard" limits on what they can do with the iPhone hardware and therefore other devices will have an edge when it comes to using the device in ways that the vendor (in this case, Apple) could not anticipate. But to your point perhaps, someday Apple will allow iPhone users to interact with another Apple device in this way but my point is that Android users don't have to wait, and I see this as an emerging trend in mobile software/hardware design that will increase the functionality gap between open and closed systems.