I had been having some trouble with my favorite stats plugin so I decided to install and compare four of them. Just had a solid image posted to the blog yesterday which gave me a chance to see how each fared. Below I have put in the stat plugin, visits, pageviews. I am using the data from Google Analytics as my 'gold standard'.
Wassup: 317 visits, 992 pageviews (excluded bots/spiders)
Slimstat: 104 visits, 210 pageviews
Statpress: 152 visits, 341 pageviews
Wordpress Popular Posts: 277 (I assume this measures pageviews but am not sure)
Google Analytics: 286 visits (271 unique), 815 page views
It seems that Wassup was the most accurate but am unsure why Slimstat and Statpress were lower and so close. Appreciate your thoughts on these and any other stat plugins.