This ranking is very unfair. Citizens Division I , II and III hitting less than 10,000 per hit and that had saved many bazoocas are there in top of the ranking, because the goal of their damage is very low. The bazoocas should not count for the damage as well as rockets, small and big bombs do not count!!
Same thing in the tournament between countries. You can see that the countries that are at the top of the ranking are those that possessed low targets.