When Tim Cook unveiled the 4th generation Apple TV, he said: “We believe the future of TV is apps.” He was right, and Roku knew that years earlier when they had an app store on their devices as well. What makes iOS so great compared to anything else isn’t just the app selection (most of my core apps are available on Android), but rather the experience of using iOS. When you launch Netflix on Android vs. Netflix on iOS - is there much of a difference? No, there isn’t.
On 9to5mac, I look at the Apple TV when comparing it to other (much less expensive) alternatives. You can read the article here.