So lets not sit back with an arogant smile and think "waa, we've had nodes all along". Or "muhahaha, your OOP suxxors for developing modules". But lets get both teams more involved with eachother and see what we can do for eachother. See what Joomla can do for Drupal.
I second Ber's advice here. Not only for the reason he mentioned (Joomla can catch up and become a better Drupal [not easy, but not impossible]), but also because that attitude is not right, nor is it healthy for anyone involved. We are in "coopetition" (Cooperation/Competition) with Joomla: There are common goals (the whole open source thing, anti-closed source, ...etc.), yet we compete as well (we are both open source CMS, vying for more or less the same audience). Let us do it in a good spirit, and in a constructive way.