Dont underestimate arsenal, they are now much better then they used to be and bayern munich is no longer having pep as their coach so things will change. Arsenal might win with a split of hair against bayern munich , we wont know the result because arsenal is quite good in their home game this season
Yes, but arsenal lost in 2 games this season, against liverpool in premier league and Soton in EFL cup. And both played at emirates. So sometimes, inconsystant of arsenal is always happen, Against Bayern Munchen in Champions league is a nightmare for arsenal.