Thanks for the interesting thoughts and comparisons. But who did Vito really trust?
As for trusting people, I believe he fully trusted Genco, Tom, and Michael.
He trusted Genco, and probably also Don Tomassino who risked his life for him. At the end of his life he trusted Michael. But I don't think he really completely trusted Tom. He couldn't trust him as a wartime consigliere. And he couldn't trust 100% his loyalty. I don't think Genco would have made the deal with Sollozzo against Vito's will, which was what Tom suggested to Sonny.
