Most improved =/= Best, He's not even talking about her eyesight here.
Also Sasuke just mentioned that to make Sakura feel better, the chapter is even called Sakura's depression.
We both know Sakura can't react to Kyubi Naruto. Not even in Part 2.
The very same chapter she gets hit by an attack she couldn't see.
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Only one, of these mention eyesight, the one with Sasori, and that doesn't prove she sees better than Sasuke.
