That Chelsea finish was an anomaly caused by the Mourinho car crash, Chelsea were a top 3-4 side with the squad Mourinho had. Then Chelsea added Kanté, Batshuayi, David Luiz and Marco Alonso. That's a top 2-3 squad, so being first is a good achievement but not the start of a football miracle. It's not Leicester winning the Premier League, not half of that.
His first season with Juve was more impressive, although credit goes to the recruitment as well. We had a top 3-4 squad and finished 7th twice, that's not an accident. Recruitment that summer was Pirlo, Vidal, Lichtsteiner, Pepe, Vucinic, Giaccherini, Caceres and Padoin. Oh, and Elia... Out went a bunch of weak bitches, in came mostly strong characters. It was a great combination at the right time, and obviously Conte is very good at getting reactions from players.