โก Azula was one of the most talented benders in the series, but if she had received the same love and guidance as Zuko, would she have become a hero instead of a villain? ๐
Aang woke up in a world that had no hope.
A world where he is the last of his kind.
A world where everyone depender on him even the people of the fire nation even if they don't know it.
A world where the savior is hunted
A world that put all their hope in him despite his age.
You are forgetting Katara has fought more stronger benders than Kuvira will fight. Just because she beat Korra doesn't mean she is a great fighter. She is only one step ahead of she knows she is going to fight Katara before hand. No planning just fight at random. Katara wins.
I am not saying Katara is not an OG you also can't say Kuvira is not an OG the girl rebuilt the earth kingdom from nothing to something not even Katara can do that. She is always one step ahead she always look her advantage and exploit it. She is fast so is her thinking.