Great variation in web statisics

I have a blog site, a WP 3.0 install. I've dropped Google Analytics' tacker code into the footer (a recommended technique I believe). I also have two different types of web statist开发者_高级运维ic software available on the virtual server, through the hosting company. However the web statistics vary greatly. Why such variation?

Statitics -- http://pastebin.com/Nc10iGaA

Thanks a million!

Google removes bot hits from it's traffic. You might be seeing google bots in the other hit counts.

I would guess that the software counts analytics differently. You should look at the documentation to figure out what qualifies a "visit," which may exclude/include crawlers, certain user agents, certain access patterns, etc.