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i think it would be a tie.

rasengan because it's stronger than chidori

technically they are a tie since they both make that super attack

rasengan and chidori ar acutally tha same cuz when naruto and sasuke fought they both went flying back

I think that rasengan is better, because you can use it as long as you have chakra...chidori, if u use it three times u die...also when naruto faught sasuke, his rasengan made a bigger hole...much bigger 3nodding talk2hand ninja

Using it three times does not mean you die. Chidori depends on how much chakra you have. If Naruto learned how to do Chidori he could use it more than three times. There's three differences to them. One Rasengan is wind and Chidori is thunder. Two Chidori is stronger for just hitting them not intending to kill where Rasengan is not (Rasengan is better for killing makes a bigger hole more likely to kill than Chidori). Thirdly Rasengan has a fixed power rate while Chidori depends on speed, power, and chakra. So as to which is better it depends. The battle between Sasuke and Naruto at Valley's End shows Sasuke walk away as victor but he had some damage from Rasengan while Naruto was knocked out from using Rasengan and getting hit with Chidori.

thats a cool picture of chidori and rasengan