Looks do matter especially in the world of mobile devices. After all, Android and iOS are two of the top operating systems in the mobile space. And we do expect the best from them. Both iOS 8 and Android L seem to set new paradigms in terms of design. iOS 8, refining the user experience in iOS 7 aims for a more holistic interface that is designed with different layers that work as a whole. From the parallax effect on the home screen to the angular flatness of the logos, Apple is aiming for a clean, pristine look for its OS. Android, on the other hand, has laid its bets on Material design, a more paper-like look for its L release. This means that elements behave in a more predictable and natural way. It is like pulling a card out of a stack, thus making the user feel "at home" right away. Both designs have their own merits and demerits. But given the sheer amount of beauty and freshness that material design brings, the winner here is Android.
In terms of performance, Android L has taken huge strides. The switch from Dalvik to ART and the inclusion of Project Volta has made Android L an OS update to watch out for. It will improve Android in areas where it wasn't so good before. This means that a better, more powerful version of Android. iOS 8, though does include some performance enhancements, those are nowhere close to the strides Android is taking in this area.
Behind the Scenes
For the developers, while Apple introduced the Swift programming language, it still couldn't match up to what Android offered. While Apple released around 4000 APIs, Android introduced an almost complete revamp with as many as 5000 APIs. That said, the biggest thing developers will cherish about iOS is that the openness it brings along. But again, developers know how big Android L is, and it is only a matter of time until developers come out with something brilliant that will take advantage of those features.
Both iOS8 and Android L are built on a similar, if not, the same vision and that is to create a complete and independent ecosystem. The goal is to have complete convergence of Mac OS X and iOS. In the same way, Google is trying hard to bridge the gap between Chrome OS, Chrome, and Android. This marriage of desktop and mobile does seem to be paying off more for Apple and less for Google. Nevertheless, in the long run, who knows which desktop will end up triumphant. But for now, if you are a long time Mac OS X user, iOS 8 will be the OS that will make you switch most of your other devices to iOS.
Winner: iOS 8
Though iOS 8 is a major release in Apple's efforts toward restraining the growth of Google, the L release is perhaps the best thing that has happened to Android. What's more interesting to watch is that how much time will Android L take to catch up with iOS 8 given the fragmentation Android has.