Stats Science: What is important to You: What file(s) do You want to be viewed by a person, not a robot? How to drive people to look at the file? It can safely be said that page views are most relevant over any other stats, because all pictures e.a. files are on web pages. Probably, viewers look at more than 1 item on a page. Hits, bandwidth, keywords, etc. are not very relevant because they don't tell if a visitor has seen any content. All those other numbers talk about machine action only. Page views count page display: Machine action too, yes, but relevant to me. I believe in AwStats, although statistics pertain to past activity and mean nothing for future conditions.
It is revenue in cash that counts, not stat numbers.
If it takes clicks or online orders, then traffic etc. mean nothing - Only page views count.