Real Madrid and Barcelona have both been highly successful in their respective leagues this season, but there has been significant difference in their performances at the European level.

In terms of the Champions League, Real Madrid has consistently performed exceptionally well throughout the competition. They have reached the semi-finals on four occasions, winning against teams like Inter Milan, Paris Saint-Germain, Juventus, and Borussia Dortmund. Their recent success has been particularly notable, as they won the UEFA Champions League last year after defeating Bayern Munich in the final.

On the other hand, Barcelona has struggled to perform well at the European level. They have only managed to qualify for the quarterfinals twice, losing to Manchester City in 2017 and Porto in 2019. This lack of success has led many to question the team's overall quality and whether they should be considered one of the best clubs in Europe.

While these two clubs may not have had as much success at the European level as some other clubs, their individual achievements remain impressive. Real Madrid's star player, Cristiano Ronaldo, has become one of the most influential players in world football, and his performances have earned him numerous awards and accolades. On the other hand, Barcelona has produced some talented young talent, such as Lionel Messi and Gerard Piqué, who have made significant contributions to their club's success.

Ultimately, the European performance of these two clubs is a testament to their talent and hard work. While they may not have achieved as much success at the European level as some other clubs, they have continued to excel in their own league and have shown that they can compete with the best clubs in Europe.