This is a bit of an apples vs. oranges comparison. My thought, while reading the article, was "Well, whoop-de-do. Why would I want to stream content to my iPhone when I'm sitting in front of my flat-screen HD TV? Gee, what I really need is a good remote!"
While I'm excited about products that provide more flexible delivery of mobile content—and I'll definitely be checking out ZumoCast—picking on apps like Apple's Remote because it's exactly what it was designed to be seems pointless.
ZumoCast: What Remote Should Be