That's not a complement. most American cartoons don't aspire to be narrative heavy world building serial stories. Many of them are episodic in nature. Basically its not like Avatar has any real competition. It also came to the game trying to mimic the style of anime.I think it high time we call this series what it is, both parts
the greatest american adventure cartoon of all time
The original series I'd put it on par with the better animes I've seen. Korra is on par with C tier anime. I think the first season of Korra had so much potential. It instead ended up aimlessly wandering around like a chicken with it's head cut off for most of the rest of it's run. The ending of the series while action packed was a huge disappointment narrative wise. Korra never really had a destination. It wasn't building towards anything in particular.