The difference between the Europa League and the Champions League: The Champions League is the top club event, and the Europa League is the second. The Champions League is played by several teams with the best record in the major leagues, with 32 official places. The Europa League is a team with excellent record in major leagues, but its ranking is lower than that of teams participating in the Champions League. There are 64 official places to participate. After the third place in the Champions League group is eliminated, you can play the Europa League and directly advance to the top 32 of the Europa League. It is obvious from this point that the level of the Champions League is higher than that of the Europa League.
Why the cup is easy to be upset: Because most of the cups are not as important as the league, many giants and Bamba teams usually don't play the main lineup, so they are easy to be upset.
Cups and leagues are commercial operations. Without the commercial operation of the league, it is difficult for the league to run for a long time.
Extended data:
Europa league system:
Compared with the UEFA Cup before the reform, the biggest change of UEFA's European League is that the first stage is divided into 12 teams, and each team has 4 teams to play round robin. The top two teams (***24 teams) of each team will join forces with 8 teams in the Champions League for the third place, and ***32 teams will advance to the knockout stage.
Most member countries can send 1 team champion and two teams, but Liechtenstein can only send 1 team champion. Usually, member countries will choose the team that ranks immediately behind the team that participated in the Champions League as the number of places to participate in the Cup, but England and France will still reserve a place for the champion of the Carling Cup. The ranking of entries: Cup Champion > League > League Cup Champion.
Generally speaking, the higher the ranking in the league ranking system of various countries, the teams under it can participate in the following qualifiers. In the past, UEFA's third-level competition, the UEFA International Toto Cup, will be merged into the new competition system and disappear. Previous cup champions have won the Champions League qualification, and the number of places is supplemented by the cup runner-up. Under the new competition system, the runner-up of the Cup will not be entitled to participate in the competition, and the places will be replenished according to the league ranking order.