The former Bianconeri striker says the Italian is the only difference between the club and rivals such as NapoliFabrizio Ravanelli has hailed Juventus trainer Antonio Conte as the "Lionel Messi" of coaching.
The Bianconeri face third-placed Napoli at San Paolo on Sunday and have the opportunity to extend their lead over Rafael Benitez's men to 23 points.
But Ravanelli feels that the substantial gap between the two sides is not down to the respective qualities of the two squads, rather the unique ability of Conte.
"Between these two roses [Juventus and Napoli], there are 20 points," the 45-year-old wrote in his column for Tuttosport.
"Conte is the difference. Antonio is the best coach ever - he's the [Lionel] Messi or [Cristiano] Ronaldo of technicians. I prefer him to [Rafa] Benitez, but also to all others - including a huge names like [Jose] Mourinho.
"What Conte has done for Juve no one else in the world has ever managed to do. As long as Antonio is there, Juve will always win the Scudetto - that can be up to 5-6 titles in a row."
The retired forward, who won a Serie A and Champions League whilst at Juventus, also paid tribute to Carlos Tevez, who he sees as a big loss for the game with Partenopei.
"Tevez's absence [through injury] will be felt heavily," Ravanelli continued.
"But you can bear it for a game. In everything he does - chasing, fighting, defending - I see my spirit in him.
"He has scored 19 goals and he is fantastic. It would be great [for Argentina] to play Tevez and [Gonzalo] Higuain together. I do not understand why [Argentina boss Alejandro] Sabella ignores the possibility of them playing together. A trident with [Lionel] Messi would be a fairy tale."
Juventus look set to retain their Serie A title, sitting top with 81 points from 30 games - currently 14 ahead of Roma in second.