How dare you call Android "Windows" in any sense of the word.... lol! Yes... in MY opinion... you are correct. Android is being used on more and more devices and continues to lead in innovation. Luckily viruses and malware haven't been anything close to what you could consider problematic, but expect that to change as mobile devices become central to what people do.
Depends on what connotation or aspect of Windows or what time period you're referring to. That it runs on a variety of devices and is used more than any other OS of its type? Yes. That it's slow, buggy, and closed-source? No.