The Europa league is not as difficult as the Champions league. In the Champions League their are lots of tough teams to face while in the Europa League it consists of many small teams and few big teams. In the europa league big teams are always at the top of performance.
The champions league is surely more difficult than the Europa league, it is a better competition with a stronger competition. There is a reason why teams that finish 3rd in the champions leaue group stage drop to the Europa league, it is because it is a lower competition. But the Europa league is also tough, especially when there are many teams in it that are supposed to be in the champions league, but are in the Europa league because they were not at their best, just like this season that we have some big teams like Manchester United and Barcelona in the Europa league, these are teams that have won many champions league trophies, so the Europa league is going to be very interesting this season.