Better Analytics Pro extends the the “normal” Better Analytics plugin by adding a few advanced features. You can get additional metrics and dimension options for heat maps and charts (for example maybe you want to see what time of the day you are getting the most YouTube video views or advertising clicks). It allows tracking of advertising clicks for additional ad networks (like Google AdSense).
Optional server-side tracking allows your server to feed data to Google Analytics on it’s end. This allows for tracking users who don’t allow their browser to report to Google Analytics (maybe they have an Analytics blocker installed). It also allows you to track search engine spiders if you wish.
This plugin extends the normal Google Analytics API functionality with a multi-threaded system that gives you faster reporting by doing backend reporting requests in parallel.