first when they are in alot in damage.
second when they are angery
third when they feel like too
No.
Rasendori as in the combination of rasengan and chidori does not exist
No they can't it will bounce off
I'd say, base on a head on attack, their equal in power, but strategically, rasengan wins. Rasengan is equal to chidori, because rasengan is only shape manipulation and chidori is both nature and shape manipulation. But, because rasengan's shape manupulation is at such a high level, it seems to equal off with chidori. In the matter of a rasenshuriken, which is a shape and nature manipulation at such a high level, that it's in a different league than chidori. Lighning is inferior to wind. however, the rasenshuriken is at a disadvantage against fire jutsu because wind makes fire stronger. So naruto and sasuke are equally powerful unless one learns a new jutsu. but sasuke has two chakra properties (fire and lightning) and naruto only has one (wind) but naruto can learn 1000 times faster (shadow clones (Naruto vol. 36)) than sasuke when sasuke relies on drugs (courtesy of kabuto). But, remember to take in matter of Sasuke's sharingan (mangekyou sharingan too). Naruto is physically stronger now, because of his Sage Mode, but Sasuke still has his sharingan, and there are still many things to learn about the power of the sharingan like how there is the level of an "ultimate sharingan". Sasuke may soon come into possession of this power (Uchiha Madara posesses this too), because he may already obtained Itachi's eyes. But the one thing sasuke has that naruto doesn't is an attitude. also the rasengan was developed by the fourth hokage and the chidori was developed by kakashi rasengan wins anyday. (\_/) (O.o) (> < ) ^ ^ This is Bunny. Copy Bunny into your signature to help him on his way to world domination.
When they fought in the valley, Sasuke was just more powerful
No.
You download them from google
Because chidori and rasengan has the same powers. You might think rasengan is stronger but they are the same thing! Chidori and rasengan are both specials. It doesn't matter how powerful it is it matters how the wielder uses it.
rasengan
February 11 2008 ok dang you get on my nerves
Naruto Episode 134: The End of Tears
Rasengan and Chidori collide, arriving at DEHTMS.
Yes.
Rasendori as in the combination of rasengan and chidori does not exist
Stronger than the Chidori (in no particular order): Thunder Clap Susano'o Mangekyo Sharingan Tsukoyomi Flying Thunder God Technique Rasengan Rasen-Shuriken Izanigi Summoning Jutsu ~Many more Stronger than the Rasengan (in no particular order): Everything in above answer minus the Rasengan itself.
No they can't it will bounce off
You can not have rasengan as a customizable jutsu. You can learn chidori which is almost the same thing.