This seems almost right, except that Chidori Nagashi is NOT on the same power level as the Wind Rasengan. The counters are as follows: Naruto learns rasengan to counter chidori. Naruto gains wind element to counter Sasuke's lightning element. Now, the particular wind technique he happened to learn first completely obliterates Chidori Nagashi, Chidori, and any lightning technique Sasuke has with the POSSIBLE (and I'm still going with improbable) exception of kirin. Until we saw kirin, there was nothing in Sasuke's arsenal that even came close to the wind rasengan as far as a non bloodline technique is concerned. In other words, chidori nagashi could probably be countered rather easily by a much less destructive wind technique than the wind rasengan.Originally Posted by Sidnne
I'll agree that Naruto's sage techniques are a counter for Sasuke's ability to make use of chakra from his surroundings. Just, not particularly to counter kirin itself. It'd be a bit overkill just for that.