Which would win? Sasuke's Black Chidori in Cursed Seal Lvl 2 or Kakashi's lighting-splitting Raikiri? Firstly, let me say that Raikiri and regular Chidori are DIFFERENT. 1) Raikiri is a S-Ranked Jutsu, while Chidori is an A-Ranked Jutsu 2) Different seals, the first few are the same, but the last seal for Raikiri and Chidori differs 3) Raikiri has the palm facing up, Chidori has the palm facing down 4) Raikiri doesn't require a running distance to achieve speed in order to increase damage, Chidori requires a running distance for Sasuke to achieve a lot of speed to increase his penetration power 5) Raikiri sounds like lighting/electricity, Chidori sounds like birds chirping, Black Chidori sounds like crows cawing 6) Raikiri is a right-handed move, while Chidori is done with the left hand 7) When Kakashi used his jutsu, he shouted, "Raikiri!" When Sasuke used it, he shouted, "Chidori!" In this sense, it is likely they were using different jutsus On 1 hand, Sasuke in Cursed Seal Lvl 2 gains a great amount of power, speed, chakra and even grows wings. His corrupted chakra turns Chidori dark instead of the usual lighting white. With his wings flapping, he achieves an incredible amount of speed in order to deliver a high-velocity killing stab. Meanwhile, Kakashi is the master of ninjutsus. He invented Chidori/Raikiri, and understands it the most. He has been practising and perfecting it for years. His Raikiri is said to be powerful enough to cut through lighting, and unlike Chidori, his Raikiri doesn't require much running, all he does is stab through.