The Nexus 4 is a 4.7" screen so technically it does also fit with the 4", 7", 10" theme going on, even if the others are much closer to their number screen size wise than the 4 is.
Anyway, the openness of android compared to Apple wins for me. I am already planning on replacing my aging G2 with the Nexus 4 and the iPad 1 with the Nexus 10. Every apple product I've owned has always felt cramped to me and iOS never changed that, whereas Android has always felt like an open platform. If the Nexus 10 works out well enough I may not go ahead with replacing my Macbook pro. Just for further reference I also have a Chromebook and a dell mini 10 netbook running windows xp and #! linux. My desktop is windows and will never change from that until the windows ecosystem goes completely tits up.
If I want to distribute an android app on the web I can and I don't have to go to through the curated Play Store. If I want to distribute an iOS app on the web, it had better be a pure web app or no go.
The aesthetics in many ways is better in the iOS than android, but in many other ways Android has better aesthetics.
Windows RT/8 is almost an afterthought here. We will see how the playing field looks a year from now. I know Microsoft is planning to spend a crap ton of money to market Windows 8, is going pay 3rd parties money to build apps for their market place. Still at this point there is little enthusiasm from developers (myself included) to develop for them. Most developers are focused on iOS then android and/or web then after they have already established a successful product and/or company they _might_ develop the app for windows RT/8.











