Barcelona is not yet balanced that is why they are not able to win big clubs but that doesn't make them to be weak team. Barcelona is still better than Manchester United in performance, Barcelona is in a better position in laliga while Manchester United is still struggling to be at the top.
We cannot compare the EPL and La Liga in any way because in terms of competition, the EPL is clearly much tougher than La Liga, where there are only a few clubs that are definitely on top each season.
This competition will still continue but when looking at the schedule it's still quite long I can't make any assumptions now because indeed we only have to see after the league restarts whether they are able or not to remain consistent.
Do you realize that when EPL teams meet La Liga teams in European competition, they are always dominated by La Liga teams, Liverpool and Manchester United have to lose the Champions League trophy due to being conquered by Real Madrid and Barcelona. EPL is more competitive because there are many big teams there, while La Liga has teams that are stronger than EPL. Manchester City, which has always won the EPL trophy, also had to admit Real Madrid's superiority in the UCL last season.
Barcelona vs Manchester United is definitely very interesting to watch. This match will prove the quality of the two teams after experiencing difficult times last season.
The era where La liga teams always beat English teams in European competitions is gradually coming to an end, because English teams are becoming stronger and evolving in their performances every season and I must say that it is a joy to watch. It will also be an opportunity once more to see Manchester United and Liverpool competing in the Champions league when the season resumes, we shall see which side will dominate in the game.