Problem with Statpress and Wassup reporting

I’ve installed both statpress and wordpress on a clean wordpress install to find out which version I want to keep and use, however both of these are reporting differnt values, despite the database being cleared both times, so they started on exactly the same values. I’ll take a look at google anylalytics when it generates a report tomorrow to see how the report looks, but does anyone have any idea why this is? and which ones accurate?

Thanks all