Well, I disagree completely with how Aether is represented as the coward here. While Aether is immortal and passive, as the fabric of the universe it also has a bond to everything living in the universe. With it comes compassion for it and a distaste for needless waste. That said, valuing wisdom over all else means it can make cold decisions without problem.
As a result, I got Air. They're very similar in that they're both Neutral, but Air is good-natured and more active/intervening. The distinction between Air and Aether lies mainly in how Air values individual freedom very highly, and in that it's a much more spontaneous element where Aether prefers to observe before action and thinks more long-term. None of the answers represented Aether very well here.
Flayne's quiz represented many elements more accurately, and the most common result was Aether because it represented your typical gamer personality. With Air in this quiz being the most like Aether was in that quiz, I expect Air will be the most common result, however not by nearly as large a margin. The other elements have a few more reasonable options here than in Flayne's quiz.