@Daydreamz
Being serious for a second, one of my favourite metrics is what proportion of readers that make it all the way, to the last chapter.
Ok so you are comparing the number of downloads for chapters One, Twp and Three. From that you are guessing at how many readers downloaded all three chapters.
For various reasons the download count for chapter One of ANY story is artificially inflated due to auto page loading etc etc blah blah.
You are guessing because not all readers of the entire story will download each chapter. Many read offline so download the epub or other format version. Many of those readers wait until a story is complete before doing so.
ePub etc uses little memory so download any story that looks interesting and delete if it proves to be tripe.
Meanwhile I have one with twice as many library entries as votes, what does that signify?
1. Option to add any new story by selected author to library. You have some loyal readers.
2. Most readers DO NOT VOTE. (Many forum posters think that when they do, they screw it up.)
It is worth restating. Your story might inspire a reader to change their entire life. Or after reading it they are so aroused their erectile disfunction is cured and they impregnate their spouse with twins. Maybe it gives them the self confidence to talk to a woman resulting in them no longer being a 45 year old virgin. All of these are possible yet none will guarantee that the reader actually bothers to vote for the story, let alone posting a comment by way of thanks.