This high-level overviews aren't very helpful anymore. All web frameworks fit into this description, replace Django with your favorite X.
I wish someone had written a comprehensive comparison of Django and RoR. There were some attempts, but people involved inevitably happen to be much more familiar (and efficient) with one framework than the other. Therefore every comparison I've seen to date was heavily biased.
Well as someone w/ about equal experience in both (but not enough). I find rails URL mapping implementation overcomplicated compared to django's KISS "regular expression table" implementation.
I do like rails DB layer a lot better than django's although. You can do a bit more with it schema evolution/definition is a lot easier/cleaner.
I wish someone had written a comprehensive comparison of Django and RoR. There were some attempts, but people involved inevitably happen to be much more familiar (and efficient) with one framework than the other. Therefore every comparison I've seen to date was heavily biased.