Many of the other Android phone makers make only Feature phones, only basic phones, and a few make only smartphones. . . but to say that ALL Androids are smartphones competing for the same market as Apple for the same customers is false; it just isn't true.
For example, Xiaomi, the current market leader in China makes a mix of Android dumb, feature, and smartphones (which are copies of iPhones) but it turns out that they could grab the Chinese market through low price leadership (and making smartphones that looked like iPhones in both exterior and UI screens) but also by achieving their low prices with the simple expediency of not paying royalties and/or licensing for the any of the cell phone technology they are using in their phones. When they attempted to move into the India Market in the last quarter, the legal system in India discovered this and has banned and confiscated their products pending infringement litigation from quite a few companies, including Cisco, Microsoft, Nokia, and others, whose intellectual property has been allegedly appropriated without compensation by Xiaomi.
The other distortion is that it is comparing one company's OS, Apple's iOS, against hundreds of others in the case of Android (Approximately 225 to be more accurate) and less than a dozen in the case of Windows phone. Other refers to only a couple of OS makers such as RIM and Samsung's new OS which is failing.