What you post is arguable.
First, the hardware specs are largely equal with Xoom. I don't know if I'd say superior. The raw hardware performance of Xoom might be slightly better but I doubt it'll be by a whole lot. At least not enough in my eyes to label one superior. The Xoom would have to seriously outperform the iPad 2 for me to call it superior. They're both using 1ghz dual core ARM CPU's. The rest of the hardware specs from size to storage size are largely equal. The main question is the difference in GPU performance.
Second, iOS has some things it doesn't do better than Android but it does have other things it does better. Android's main strength is in its ease of customization while iOS's main strength is ease of use. The main areas where iOS needs to improve is a widget interface for its home screen and better notification. That's largely it. From the standpoint of what type of apps you can create with Android that you can't do with iOS...I can't think of one. In terms of apps you can create for iOS, the main thing is avoiding Apple's iTunes TOS. I'd call Android different but I don't know if I'd call it superior to iOS.