I haven't seen that many of Dybalas games this season, but stats wise him and Berardi are not that far apart..
Dybala 13 goals 8 assists.
Berardi 9 goals 10 assist
A hattrick for Berardi against Atalanta and both are neck and neck;-P
Fun aside i dont believe that Berardi has been that bad at all this season, people just had way to many expectations, following last year! I truely believe that this is the right time to bring him in, we have great leadership in our ranks, and especially Pirlo and Tevez could be good influence for him (both who might leave next summer) wouldn't it be awesome that Pirlo showed him a trick or two on how to take freekicks and passed the 'mantle' on to him... And Tevez showed him how to handle that aggression the right way... Most of all he would be amongst Winners thought to behave, eat and sleep like one!