Without giving it too much thought, I belive that Barca success over Chelsea in this transfer window comes from few very simple facts:
1. Players would rather boast to their children that they played for Barca, screw Chelsea, Barca is still much bigger name
2. They know Chelsea will not win premiership while Barca is probably first favorite for title in Spain. All the main players in Real are one year older and they are reaching their limits. There will have to be generation change and we all sow how it looked in first half against Barca when old-timers weren't on the pitch.
Barcelona and Chelsea are both big clubs and they are both in chaos from finance to club ownership and changes in club management and strategies. Tuchel and Xavi actually got experience from their past seasons with Barcelona and Chelsea so in a new season, players won't have to worry that they have to work with a new coach with strange management. They all familiar with their coaches but Chelsea have more challenges and candidate competitors in Premier League than Barcelona have in La Liga.
Chelsea will have to beat 4 to 5 clubs to win Premier League but in La Liga, Barcelona will have to beat 2 Madrid clubs to win La Liga.
i'm gonna go with a super bold prediction: top scorer will be either Benzema or Lewa,, i know i know, no one saw that coming 🤭
seriously tho, i'll give the edge to Benz... new faces in Barca's attack, i could see them struggling to link up in a few matches, and it's world cup year so there's going to be a lot squad rotation, and since Real doesn't have squad depth (yet), Benz will be in charge of goals week in and week out
Barcelona have good attacking system and Lewandowski has good skills to convert opportunity to goal. Benzema with a fantastic goal to Club America shows that after a summer holiday, he is still here with great finishes. Their clubs are two best clubs in La Liga so they will be best candidates for Pinichi in La Liga 2022 - 2023. Lewandowski will have to rely more on his mates because it will be his first season in a new a club and new league.