The quality of Barcelona's play is good now but they are trying hard to improve. But the matches they have played are really convincing. I have seen the goalkeeper perform the best in the Barcelona team. If the goalkeeper plays poorly, then Barcelona is better. No matter how they play, they will never win.
I don't understand the point of what you are saying. Because while the world cup is still rolling, none of the teams are competing in their own local league matches except for friendly matches. Even so, I don't see Barcelona in this regard because there are many Barcelona players competing for their respective countries in the world cup this time, so you need to wait for the world cup to finish to conclude this better.