The Sardinians took the lead through Paolo Bianco, but within 60 seconds Pavel Nedved drew level.
"I am satisfied because Sissoko won back the ball several times in midfield," Ranieri said of former Liverpool midfielder Sissoko.
"You can see he is a player who has already won League titles. It was a great game played by two teams who wanted to win, so the joint Man of the Match title goes to the two goalkeepers."
He added: "I wanted the victory, but Cagliari did not come to Turin in order to be sacrificial lambs. They were confident and look in good shape."
Davide Ballardini has finally turned a corner with his club after four points in two games.
"We played fantastic football and my team confirmed the positive things I saw during the week.
"The side has improved, even though I am convinced we can do even better. At the end of the day we are satisfied with the result, even though looking at individual incidents we could have had more than a point."