I think Zebo's oversight of having to get back into position after the ruck before the box kick was the really extraordinary aspect of that try! It was about as impressive as his intercept agains Italy a few years ago, he needed the athleticism and wherewithal to score it but there's dozens of other players who could do the same thing.
Unfortunately we're so restricted to open running in international rugby that a very basic, albeit nice on the eyes, piece of play is the second best try scored in the championship.