I don't like Sarri and I think he shouldn't be coaching teams like Juve and Chelsea, but the difference is lower mostly because of Conte's Inter gained more points.
The gap between Juve, Inter after 33 matches since 11-12 season.
11-12: Juve 71 pts, Inter 49: -22
12-13: -24
13-14: -34
14-15: -28
15-16: -18
16-17: -27
17-18: -22
18-19: -26
19-20: -6
Cho seems like he is just another talented sportsman without self-discipline. His talent might be good enough for top level, his character is definitely not.