I'm talking about the manga, now naruto has mastered rasengan, sasuke maybe enter cursed seal level 2, choujis red pill, neji's outstanding battle against the spider-ninja. compare them to your wounded lee, who'll win!!!! even if he survives the surgery, i doubt that he will recovery that fast... and by the time he's recovering (if he survives), naruto and all the other genin's chounins will become "powerful" more or less.