Even if FC Union Berlin had led the German Bundesliga until the sixth matchday of the season, their inaugural Europa League campaign was still a complete flop. Seven days after losing 0-1 to Union St. At home to Gilloise, Urs Fischer's FC Union Berlin are still suffering a similar loss to Sporting Braga in Portugal due to their poor form in the Europa League. Now, Braga and St. Gilloise is in first place in Group D of the Europa League with six points, while Union and Malmö FF of Sweden are still without points.
I am not surprised to see how Union Berlin is performing in the Europa League because not all teams that qualify for the group stage are able to play well even though they are very good in their domestic league. I would probably say that in the Europa League a Laliga team is much more likely to qualify and advance to the final than any other team in a different league.
You can look at the history of the teams that have won the title in the last few seasons and will probably find out that Laliga teams dominate the title more than any other. Frankfurt are the latest German team to win the title last season, it is a record have broken. In addition Manchester United and Chelsea have also won it in the previous few seasons.