Are you still pondering which CMS is better for your blog? I found this great article that compares the functions and uses of WordPress and Joomla.
In Joomla: Joomla is for managing and publishing a bouquet of different content types, in diverse ways.
In WordPress: Though it began as a full-fledged blogging tool, it has evolved into a CMS. You can check the blogs of the NY Times to get a peek into what WordPress can do. However, WordPress still caters mostly to newbies.
It caters to end users, developers and designers alike….More at WordPress Vs Joomla