Every character in the OP commercial was from a popular and much beloved cartoon. The Powerpuff Girls is one of the most popular and famous cartoons of all time.
Angry Beavers and Danny Phantom were great, but they were not on the same level as The Powerpuff Girls, Ed Edd n' Eddie, Johnny Bravo, Courage the Cowardly Dog and Johnny Bravo.
The Powerpuff Girls in particular crushes both of those Nick toons and others together all by itself.
I may have misinterpreed your post, but it looked like you were deriding the shows CN had to offer in comparison to the ones being showed by Nick at the time.