I think Dean Martin had a better voice. But Sinatra cared more about the music. He would pick songs and musicians to work with, and studios and production. Martin just showed up and sang what they gave him.
> But Sinatra cared more about the music. <
I totally agree. And if you listen to his background music, it is just right. Not to soft. Not overpowering. Just right.
Sinatra came to my town twice in my younger days. I still regret not going to see him. Being cheap is often not a good thing.