They were not some of the best, but they were good and better than many other series the network chooses to treat much better. Naruto did better, yes. It stayed on Toonami until its end where it went down with it. The other slots were given to reruns of mostly their own shows though (Ben 10, Samurai Jack etc.).
--
Nio-chan and Ctes: http://img.imgcake.com/nio/Untitledpngyn.png
BroAndCharAndCtes: http://i.imgur.com/oBQfY.png