In my opinion, as a white belt, she probably got it due to her swim move to spiderweb. In all reality, Miller's arm bar was probably a more difficult sub, do to having less control than one would have in spiderweb. But not everyone might understand that concept. To many, the swim move just makes it seem much more technical than Miller's. The anticipation of whether she would be able to pull it off again may have played into it as well. Just my two cents.