let me just say abit more about haku's strength:
kakashi says i should do this, when naruto appeared, he realized haku was WAAAAY more powerfull then naruto or sasuke
haku broke that guys arm just by holding it ( naruto kyuubi style)
sasuke threw shuriken when he was busy talking to naruo, haku dodged it with ease
in the flashback, zabuza says, he is a fighting machine labeled ninja, on top of that his techniques surpass mine
he never intended to kill ne of em, or the fight would be over fast, reeeaaally fast
(also naruto had that same ultra beastly look on him against haku, as with the sasuke naruto fight, the other kyuubi transformations didnt look like that, just watch it again, the chakra just didnt manifest around him as a fox)
AND they CAN sense normal chakra, or both of em would be like, w8 i sense chakra, that means it is a DEMON, AAAAAH, but no, they questioned it first, zabuza didnt even say ne thing like, hmm must be some demon passing by then( ofcourse kakashi knew later on but thats logical)
and come on that first kyuubi punch didnt even ko haku
and just a little screen cap of what he did as a 6 your old brat ( maybe even younger):


he never even used the full potential of his bloodline limit against team 7....


ok back to ep 134
hmm i didnt notice sasuke walked into a black "future" or something, maybe hes relying on oro more now