UI comparisons; Android dont's

There are a few new UI comparison pages up at the moment, comparing both iOS6 vrs 7, and Android vrs iOS

In a similar vein, Android UI Patterns have a great post up about the don'ts of Android UI design. One of the big ones, which is very different from iOS, is:

DONT RE-SKIN EVERYTHING

While well re-skinned apps might look great and even feel like part of the platform it definitely adds a massive amount of work for bot designers and developer. It simply isn't worth it. Start your design from Holo theme and change things you need to change and leave components that work fine without changing stock.

I wonder if iOS7 is going to be similar, at least for a year or 2 while the "new UI" looks new and fresh and designers find their feet.