If you look at Arsenal's performance in the last few games in the Champions League, and especially against FC Porto, they were a bit shaky, I believe, because of lack of experience, when in a big tournament like the UEFA Champions League. So I believe their lack of experience will cost them in this game against Bayern Munich, and Bayern Munich are not a team to be underestimated regardless of their recent performances.
It would be a mistake if any team underestimated Bayern Munich in the Champions League, because a team as big as Bayern Munich is a team that is often taken into account by many of its opponents when they play in the Champions League. And Arsenal certainly doesn't underestimate Bayern Munich in the Champions League this season because Bayern Munich's performance is also quite good in the Champions League and I think Arsenal will be a little overwhelmed to win the match when they face Bayern Munich in the Champions League.