The fight didn't make much sense, power-level wise.
In part 1, at the VOTE fight, a one-tailed Naruto could counter CM2 Sasuke. Sage Mode should be stronger than a mere one tailed kyuubi chakra cloak. So they switched the power levels imo.
Also, we didn't really see the clash between Kirin and rasenshuriken, the scene switched to Sasuke having pierced Naruto with a chidori. If this is the same chidori Sasuke made when he launched Kirin, does that mean that Kirin and the rasenshuriken cancelled each other out? If so, how could Sasuke the next second pierce Naruto? Was Naruto that off guard? Hard to believe. Seems more like plot.