The main differences I can see are more rhythmic variation - I used semiquavers and quavers pretty much all of the time, wheras you use some demisemiquavers, and semiquavers in both voices sometimes, which adds to the interest - and that in your version there is more of a feel of melody, and the melody feels like it's going somewhere, there is a shape to it, it's not just going all over the place, and the two voices have opposing but complimenting melodic curves.
I think I used far too many commas in that last sentence
Was that what you were thinking of? Or am I again barking up the wrong tree?
