The image at left is a slide from a deck I'm putting together for possible lightning talk at DrupalCon SF. So far there are 11 slides showing the historical complexity of Drupal in terms of some simple metrics, and comparisons with the current release of Joomla!. The point of this is to try to understand the complexity of Drupal, both historically and in comparison with other frameworks, in terms of software metrics.
Comments, questions, pointers, and insights/opinions are very welcome.
BTW - The Joomla metrics (and the Drupal 7x) metrics are probably not quite right, yet - this is a work in progress. I'm working on metrics for Wordpress and a few other platforms also.
UpdateI presented this at DCSF - thanks to everyone who commented and discussed this with me. The attached file is slides as presented Sat Apr 17, 2010.