First match is just a start, we should watch for more matches to see how good Juventus are this season especially when they have to face big teams. I dont mean to say that I doubt about Juventus performance but they have to prove it in every match for the whole season. The same for all teams such as Inter, Milan, Napoli, Roma, etc. What they have to do is to play consistently.
It's too early to judge the team's performance when the new season begins, Juventus has just started the first game of the season. The real proof is when Juventus face a big team, there are so many big games to be faced throughout this season, Juventus will also compete with other European clubs in the Champions League.
The arrival of several new players can provide a fresh wind for Allegri, he has more choices when determining the players who will fill the main squad. But that doesn't mean Juventus can triumph again in Serie A, Juventus need time to build their dominance in Serie A after collapsing in the last two years. Serie A is more competitive than ever, the transformation of other teams can pose a threat to Juventus in the fight for the Champion Title.