Turning around one edit pass on a novel in two or three weeks is pretty normal. Sandwiching three passes into that frame the way you did over the weekend isn't the norm. Sometimes it's necessary because of deadlines, but that's not the norm any more than you would normally turn around a short story that size in that length of time if you didn't have a deadline for it.

My own prejudice is that a 15-25K short story is about the hardest length to work with -- you have all the unity and coherence issues of a true short story, and all the layering and character development issues of a full novel. But that may be because I'm comfortable writing long or short but not in between...