From my observations in Barcelona three matches that they have played, it shows that they might have difficulty this season in winning more matches to defend the title. I feel that's Real Madrid turn to win the Laliga title this season because that's how they have been rotating it since four years ago. Whenever, it's Madrid turn to win it, Barcelona performance will not be consistent which they have started with this season.
You are in a hurry. The season has not started well yet and the competition between the teams has not started. The season has only started and the teams have started playing matches. The league title cannot be decided or predicted by watching only three matches. You do not know yet what is going to happen with the players or what is going to happen with the teams. Even the teams have not finished building the team completely, some players are still being tested and new strategies are being tested. Already you are starting to predict the team that will win the title which is too early. I would suggest, at least let the teams play 15 matches and then pick the best team in the league. Even the teams have not yet entered the busy schedule, when they face a busy schedule it will become very difficult to be consistent in the league, wait for that time