What I find fascinating is how the Clark and Washoe delegate swings were almost the same percentage as those in Lyon. You'd think there would be more variation, but they were all in the same neighborhood, varying by only a few points. It just looks like Clinton's supporters statewide though their work was done back in February and defaulted on their duty to carry the job on to the second level.
Mind you, caucusing and conventioneering is hard. I know from my experience with WSFS Business Meetings now much depends on a devoting a whole lot of time that you might want to spend doing other things. But in this case, it does mean that the selection is being driven by the most dedicated members of the party. Whether this is better than a primary-type system where you just cast a ballot is hard to say. I advocated for a mixed WSFS system whereby legislation would continue to be originated and modified by those people who show up, but would have to be ratified by a ballot of the entire membership. This proposal failed, for multiple reasons. Nevada gains some advantages with using a caucus system (more money from the central committee, more influence because we're only third in line instead of last) but also loses things (most party members do not or cannot go to caucuses).