I suspect this is a significant challenge for Google and Android branding in general. When people compare their experiences "with Android" it seems they don't mention the particular hardware they are using. Unlike Apple where if you're using an 'iOS phone' the hardware is known. So its perfectly understandable when two people have diametrically opposed opinions on Android, switch hardware, and switch sides. Its like every dessert was named 'ice cream' and yet some people ate mars bars and some people m&ms and some twizzlers.