Napoli striker Dries Mertens insists Juventus aren't so superior.

The Partenopei are already six points adrift of the leaders after losing the head-to-head in Turin 2-1, despite having taken the lead with Mertens.

“It was a very unlucky game, but Napoli proved we are up there this season. We fought hard and went for the victory, showing no fear," the Belgian told La Gazzetta dello Sport.

“Juve have signed great players and are perhaps even stronger than before, but honestly they haven't entirely convinced me yet. Napoli are there for the Scudetto, as Juve will run into difficulties eventually and we have to take advantage."