@bold- She surpassed Tsunade after she spent over a year being trained by her. Not just because she wanted to. :/
But, she didn't get handouts and I agree that Sakura is book smart. She did well to get where she's at now.
Yes, but having a blood line helps and according to the databook Karin is as smart as Sakura. Sasuke has even specifically noted Karin's intelligence before, whereas he hasn't for Sakura. SasuKarin ftw.
And regarding Minato, he was only a father for 10 minutes in their time. He didn't leave Naruto anything other than half of Kurama. Naruto also doesn't have the same analytical ability Minato has. He's just good at improvising in battle due to his prankster personality and he knows how to utilize his Kage Bunshin in a decent way.
-last post in this thread-.