These 2 are both very fast and in a way they are both assassins. (Killua is a complete assassin, but Sasuke also uses stealth to take on his enemies once in a while) A major difference is that Sasuke has jutsu and the sharingan. With the sharingan he can copy Killua’s moves. Not that he’d need them since he’s much stronger. Killua has some pretty great speed, but I don’t think that it will be enough to defeat Sasuke. Sasuke wins
Fanfic version below
DReager1.com 