We have Piwik running as well as Google Analytics on our sites. We’ve noticed that the Piwik figures are massively higher than the GA numbers.
If we take Googles “users” number for today it reports 516. If we look at Piwiks “unique visitors” for today it says 1538. That’s an additional 1000 visits.
Now, it might be that “users” and “unique visitors” are different metrics, but from what I can see they are broadly similar. Certainly there are no Piwik metrics being shown in the WP portal that match up with the GA numbers remotely.
Any ideas why this might be?