With both the iPhone 5S and iPhone 5C announced already, just how good is Apple’s iOS 7? We’ve been using it for a short while and we’ll admit that it doesn’t feel half bad, but Pfeiffer Consulting has taken a rather in-depth look at how Apple’s new OS ranks against Windows Phone 8, BlackBerry 10 and Google’s Android (note the firm used Samsung’s implementation of Android over the stock version).