This might be kind of surprising, but it looks like Bernardeschi and Dybala are players of completely different potentials. And what I'm saying here is based on their performance and progress during the last three years (including Berna's time in Florence), not on their current levels only.
Berna has everything that it takes to be one of the Juventus legends (especially that unique fusion of self-motivation, passion and humility all Juventus legends have), while Paolo seems more like another one very gifted player from South America. There were dozens of them: Saviola, Pato, Oscar, etc. Frankly, it was difficult even to recall their names right now, and this is exactly what I'm talking about.
I hope Paolo proves me wrong.