It's only been 2 weeks, and I won't rush to say that they are fully prepared, because as you said, they are facing a team that on paper they are still better, besides that we actually can't know their real strength just by looking at 2 matches. But of course that is a positive signal for them, the only team that has not conceded a goal and also in terms of goal productivity, so far they are still the team that leads the goal tally. But again, it's only been two weeks, we still have many matches ahead, and at that time we can't fully know whether they will be able to maintain their performance enough to continue to achieve positive results or not.
Two matches are very little compared to 38 matches totally in Serie A, it's less than 10% of total tasks they have to complete. Additionally, they must meet and beat stronger teams to show their actual strength to convince us better. This week, Juventus will meet with AS Roma and it's a first big match in this season for both of them. They have different starts in this season and Juventus with better form, and better head-to-head record against AS Roma, looks to have better opportunity to be a winner after this match ending.
Beating Roma, Juventus will go one more step to show their readiness for Scudetto race in this season and it will be very good beginning for them. In transfer, it's bad that they let Chiesea moving to Liverpool as he is one of most promising Italian player. Moving to Premier League is risky for Chiesea as he will face with more physical attacks and might get more injuries.