The Bianconeri manager stoked the flames by suggesting that his Spanish counterpart will have "achieved nothing" if he does not guide the Partenopei to the title this season.
"We each have our own way of doing things," Benitez told Sky Sport Italia.
"I worked in three different countries with different mentalities and believe this is the way to win, whereas he has his view of winning. It's fine.
"Napoli are growing, as a team and a club, whereas Juventus have been winning for years, so it's only natural they are considered favourites."
Parma visit the Stadio San Paolo after the international break.