I have to agree with all that you say, but the advantage of iOS I believe that its in the dedicated hardware that they run. Its much easier to adjust a piece of software in a specific device that build software to work on almost any kind of device, screen, etc. Android has to satisfy everyone??? with no background, and this is the problem of W8, they have a background too big to forget and they have to innovate at same time. A much more difficult task to achieve.