Alexa vs. Technorati: charting the top computer and internet blogs

Like Business and Finance, this group of Computer and Internet blogs shows a fairly linear relationship between Technorati 100 rank and Alexa three-month rank, with a few notable outliers.

Two Wordpress-related blogs, Kubrick at Binary Bonsai, and Wordpress > Blog, stray a bit. Why?

Perhaps Wordpress > Blog gets more credit for traffic on Alexa than it should?

Perhaps the fact that Kubrick at Binary Bonsai is not really a blog has something to do with its poor showing at Alexa?

Looking at the full chart, can you help explain any other anomalies?