With respect to only having to "worry about one resolution", I disagree. Android does give you a set of tools for working with multiple screen types, but it's

With respect to only having to "worry about one resolution", I disagree. Android does give you a set of tools for working with multiple screen types, but it's a bit more complicated than "2 sets of art assets". This only addresses one aspect of different screens: pixel density. This still leaves out different screen sizes. Even then, a "normal hdpi" screen can still be different from another "normal hdpi" screen. It certainly does not help that Google's dashboard for screen and density figures has not been updated in over half a year. As far as your second point goes, I think that companies' attitudes to Android development will change to reflect the evolving marketplace. A year or two ago, Android just did not have the market share to justify a lot of work. Now that Android is commanding significant market share, I think Android development will begin to be seen to be as important as iOS development.