Aquaman gets a lot of flack, but I don't quite buy it.
Go to Superdickery.com, look under the heading "Stupor Powers." I think you'll find a lot of characters there that make Aquaman look positively bad-ass. Example: Superman's super-weaving abilities. No, it's not using super-speed, the comic very explicitly states that he weaves with super-weaving powers.
Also, before someone else tries to bash on Mati from Captain Planet, he once took down terrorists by bringing the creatures of the forest, from squirrels to a grizzly bear, thundering down upon those poor criminals.