I know nothing about this. If Kishimoto brings out a secret jutsu from Sakura that proves the contrary, a lot of haters will bring their madness talking about "SINCE WHEN SHE IS SO POWERFUL!? I'LL STOP READING THIS PIECE OF SHIT" and then, six days later, they will keep trolling and waiting for the next release. So typical xDAlso, lee and gai are better than her at chakra control seeing as how they're able to use the chakra gates.