I did some testing in the iPad 2 Simulator and my scene looks nice. Then I tried the same on a Retina iPad and everything is tiny because CocosSharp uses real pixels. So I looked into the samples and found two ways out:
What's the best approach if I want my tiles in my game to be 140x140 whatever-units (pixels on non Retina iPad)? And what about other platforms (Android) - when are they considered "hd"?