That's like going to McDonald's and asking where's Burger King. Sorry for the gruff analogy. Just sensitive to marketing stuff. It may not be a big deal.
Drupal templating is nowhere near as advanced nor as popular as the Joomla stuff we've grown accustomed to. You'll find a few so-so themes for download on the project site, that's all. They recently closed down their showcase area for lack of maintenance. As far as I recall, there are almost no sites offering professional-looking Drupal templates. I guess their philosophy is "roll your own or, if you can't, hire someone to do it".
Drupal is a slick system and in some areas, it is way ahead of Joomla, but regarding usability and templating it still has a lot of catching up to do.