Conte raises the level of the average player. He drops the level of the star player. That's what meticulous and rigid organization does. You give an iron clad role to Giaccherini and he can perform it. If you give that same instruction to Ronaldo, he loses his creativity and freedom.
That's the main difference between Conte and Allegri. People think Allegri is a classic Italian coach but he's not. He gives a lot of freedom to the players. That's why if they're not good, they will flounder quickly. For example, "Hey Matuidi, just run around near the box and try to attack". Conte would never say that.
Conte will bring a 3-5-2 and tell Ronaldo to move in a certain path to combine with the ST every single time, for example.