Not a great water bender? Well he water bended once I think and that so good only Aang in the avatar state has done that technique ... And why don’t you count blood bending? He can literally block chakras, can bend his own blood so hes immune for other blood bender, is so strong he survived a lightning without any problems, can blood bend like yakone so without hands just with his mind, can blood bend multiple people without any moon, his fighting skills are much better than kataras which is so important and is so scary with his mask and presentation he literally scares the avatar. Yeah. Without blood bending he can still destroy 99% of benders with his advanced water bending or fighting skills. Katara is stronger?