PSV is not a favorite against Arsenal, especially if Arsenal plays at home. Arsenal have performed well at the start of this season even though they have also struggled to win their last 4 matches in the Premier League. This will be a good match for both of them considering their meeting record in the last 4 Champions League matches. Arsenal and PSV both have 1 win and 2 draws and 1 loss each, so this will be a tough match for both.
In the champions league; there are no favorites in the group stage;
There are still favorites club to pass the group stage. The chance owned by the club like bayern is far bigger compared with some clubs like copenhagen or galatasaray. Even though these clubs can beat bayern but the chance owned by bayern is still bigger to pass the group stage.
I knew that the small team can beat the big team but the quality owned by the big team is far better compared with the small team. You can't deny that.
anyone can beat anyone, anyone can defeat anyone. Also in the champions league; there is nothing like league form, you can be on a 20 game winning streak in your league; and get defeated in the champions league. Arsenal needs a top performance to compete in the champions league.
You was taking arsenal as an example which was a bottle club. People knew that as a bottle team. You can at least try to take real madrid as an example. It will be far better rather than use arsenal.
Arsenal was even failed in europa league even when it was on top of its performance.