Rasengan or Chidori won known. They would always fly back or someone would break it up. It would be a giant collision, Rasengan is more cooler. But Chidori is more powerful, if Sasuke goes into Curse Mark level 2 he will overpower Naruto. Who was in one-tail demon form. So it is basically a tie, since Demon Naruto and Curse Mark is not includded.
The point was nothing, it was just for them to finally fight. So neither are stronger in regular form, it had nothing to do with Rasengan being stronger. Jiraiya could easily say that so he could train Naruto. Naruto didn't want to train with him until Jiraiya said that then he took off. All the clashes were a tie in there normal forms. They always exploded flying back.
Originally posted by Souichiro Nagi
Just then if you havn't noticed Sasuke had gotten more powerful! AKA he would Chidori Naruto's ass with Curse Seal level 2.
You insist that when in Curse Level two, his Chidori would overpower Naruto's Demon Rasengon...
But it didn't, they negated each other, and Naruto ran out of power.
Naruto is stronger then Sasuke in the first place. Naruto purposly lost to Sasuke when they fought in there demonish forms in front of the waterfall. Naruto aimed for Sasuke's headband, while Sasuke was aiming to kill. I have no doubt that if Naruto had gone all out with a killer intent he would have won that match.