What do you mean you wouldn't bet on it. He flinches every time Oro or Sasuke are mentioned and he blames Oro for Sasuke leaving the village instead of blaming Sasuke. In naruto's convoluted view of things Oro kidnapped Sasuke hence the need to rescue him. So there is no lack of hatred for Orochimaru in Naruto. I remember how he reacted when he learnt that Oro was the one to kill the third and Tsunade and Jiraiya weren't hunting him down.