Before I had ever used an iPad, I wouldn’t have guessed just how right for a tablet the iPhone OS is. But now that I’ve seen it in action, I think with a few refinements it will become far more powerful and game-changing than we even now realize.
I haven’t used Android enough to make a value judgement on this, but I suspect that since Android was originally conceived as a Windows Mobile OS killer and not a foundation for a whole new paradigm in portable computing, Google is going to have a rougher time making that transition from phone to tablet. They are just now adding true multi-touch input capabilities, years after the initial release. Which means multi-touch will always be an add-on for Android, whereas it’s the foundation of iPhone OS.
Clearly, Microsoft’s notion that you can slap Windows on a tablet, give users a pen, and change the world was a complete failure. Scaling down a giant beast proved to be unwise. I’m not so sure scaling UP Android will necessarily work better. But I think there’s at least a better chance of that working in the long term.