You shouldn't blame anyone who is underestimating Arsenal, because they just see it from their own perspective that Arsenal might not be able to go beyond the stage. The reason is because, they are playing with a club that is more experienced than them in the Champions League. If I want to start naming one of Arsenal players that is certainly going to net the post on that match day, I cannot call any.
Arsenal for the first time after 2007/2008 have managed to reach the quarter final with a penalty shootout, which shows that it was a narrow escape, and a game of luck. However, we might think that the gunners don't have any bullet in their gun, but will take some shots on that day.
Everyone has their own point of view and everyone has speculation about the betting choices they will make. There's nothing wrong with that and I've read several views for those who support Arsenal and also those who support Bayern and I think it's quite logical but after I saw both of them I increasingly confident that these two teams have the same percentage to win the match.
So I wouldn't bet excessively on this match because anything is possible.
Arsenal currently cannot be compared to Arsenal in previous seasons, they have improved a lot and so have Bayern, many differences have occurred this season.
Yes, everyone must have their own point of view in assessing something, especially about the soccer team, everyone has a different way of analyzing a team that produces different conclusions as speculation, it is a natural thing and not something that can be intervened by anyone in opinion, especially in a public space like this Forum, don't get too carried away with personal things here, we only share opinions and views according to each person.
I myself concluded that Arsenal have a much higher probability of getting a win than Bayern Munich because if you look at the performance that is noticed between these two teams both in domestic league matches or the Champions themselves Bayern Munich seems to be regressing slowly at the end of this season, while Arsenal are much better because they are progressing and can compete with Man City as champions last season. Maybe and unlikely but Arsenal can win the match against Bayern Munich in the Champion match even if both are in a complete squad and in good form, yes if not too sure it is better to postpone first to bet because it will cause regret if you are in a state of doubt like that.