How would Vito have handled the Moe situation. Michael behaves pretty arrogantly. Look how he says casually: "The Corleone family will buy you out", fumbling with his lighter. My guess: Vito would have been more polite. On the other hand, Michael's approach might have been a deliberate provocation to see if Moe loses control and says something he wouldn't say easily in a smooth conversation. And that's what he did in the end: "I tawked to Barzini."
