I have a bunch of iOS devices and a Motorola XOOM 2. On paper, the XOOM 2 should kick the arse of, say, an original iPad but it does not. I have tried to browse developer.android.org on both, and only the iPad renders the API Reference correctly: the XOOM leaves the lower-right pane completely empty much of the time.
To be fair I should compare it to my iPad 2, in which case it looks even worse. Pages generally take an age to load, and the only way to get acceptable performance is to turn off the flash plugin. This means you don't get any videos on the majority of sites unless you enable debug mode in the browser and tell it to use the UAString of an iPad.
Now you can point out that the XOOM 2 is running Honeycomb 3.2.2 and not the latest greatest Ice Cream Sandwich 4.0.x, but this is not my choice: Motorola haven't issued an update for ICS yet so I can't have it.
Bigger range? Yes.
Better OS? No. What kind of retard thinks perpetuating a destination-information-free back button is a smart idea? I lose 80px at the bottom of the screen for that, and there are always 600px of blackness which could be used to hint where tapping it will take you, but no.
More Open? Maybe.
Lower Cost? If you don't value your time.
Programmable? Nowhere near as easily as iOS. On iOS I only need to care about the current release because everyone likely to purchase an app has 5.0.1. On Android I have to code for the archaic 2.2 to meet the same market share.
Basically if you buy an iOS device Apple can screw you over, but probably won't. If you buy an Android device Google, the device manufacturer and (if applicable) the carrier can screw you over, and 2 out of the 3 probably will.