Clearly this also depends on what you consider a "major version". If you consider major Android versions to be 1.x, 2.x, 3.x and 4.x, Android would look a lot

Clearly this also depends on what you consider a "major version". If you consider major Android versions to be 1.x, 2.x, 3.x and 4.x, Android would look a lot better. In actual development experience, pre-ICS (2.x/3.x) and post-ICS (4.x) are a big divider.