The male benders in ATLA:
Really good. They worked hard to get where they are skill wise and while it hasn't always been easy, they are capable and can hold their own in a fight. One of them was even the Avatar, which is pretty impressive since he mastered the elements at age twelve, rather than start learning at 16 like most Avatars.
The female benders in ATLA:
Inarguably the most powerful and unmatched humans in the entire world. Prodigies, masters, and creators of subbending styles. One was compared in skill to the Fire Lord at age EIGHT and able to perform one of the rarest and most difficult forms by 14. She couldn't be defeated by another's (even the Avatar's) bending alone. Only faced defeat when fighting two other master benders while on the verge of a complete mental breakdown (officially being defeated by different female bender). Another held an entire city up by a single turret while standing on unstable ground, and then went on to invent her own bending style at the age of twelve. One mastered her element in mere WEEKS, mastered bloodbending and defeated the woman who INVENTED IT the FIRST TIME SHE EVER ATTEMPTED IT, held her own against a master waterbender without ANY TRAINING, and fully healed someone from a fatal wound, making her a master at two vastly different forms of waterbending at the age of 14. A female Avatar quite literally reshaped the planet and created her own ISLAND. AND MOVED IT ACROSS THE SEA. These women shown in the show are not only the most powerful and talented females in their universe, but also in almost any known piece of television or fiction, all while being completely fleshed out and complex characters, not being defined as nothing but 'strong'. Each has their own personality, strengths, and weaknesses.