When the Chuning Exam was underway in the forest we saw Sasuke great weakness, as Orochimaru made His appearance Sasuke panic and became a scary cat and both Naruto and Sakura had to snap Him out of it. I showed that when things get rough and Sasuke can't overcome someone right away He stares to fall apart unlike Naruto who keeps trying even if He fails, Naruto will fight no matter what. This might happen again if Sasuke cannot win right away His moral might waver at a critical point and time.