"Quinoa is a low-calorie, gluten-free, high-protein grain that tastes great." says the author.
It's low-calorie compared to butter maybe, and high-protein compared with a cucumber. But compared with the usual suspect of dinner alternatives like pasta or couscous it's just the same. Just by looking at the macros, there's no need to buy quinoa, especially if it's more expensive than other options. This is of course disregarding that it's gluten free and not looking at the micronutrients.
Maybe I'm going cross eyed from a long day, but looking at that result... how can Quaker oatmeal have 2g of protein and be 5% USRDA, while quinoa has 4g of protein yet 7% USRDA? Shouldn't that be 10% USRDA for quinoa?
Probably rounding issues, maybe intentional. Food vendors are known to fudge numbers in the low digits, legally, which result in problems like this when you extrapolate.
100 calories of Quinoa
http://www.wolframalpha.com/input/?i=83+g+quinoa
100 calories of Oatmeal
http://www.wolframalpha.com/input/?i=26+g+oatmeal
However if you look at the vitamins, oatmeal wins.
I also wouldn't call Quinoa a super food, but it does fill a gap left by other grains and is definitely a worthy addition to a healthy balanced diet.