I think there Is nothing wrong with that, because indeed we have different views in looking at the possibility of who will win in the game, at the moment Arsenal are call into doubt not because of their poor performance but indeed so far we have not seen a strong mentality from Arsenal when they are in the Champions League,  Bayern Munich and Arsenal have different performances in the domestic league, but their journey to the Champions League quarterfinals this season is quite the same because of their position which did lose in the first leg, but the difference Is that arsenal actually Struggled to beat Porto while Bayern Munich easily turned the tide against Lazio in the second leg.

I will not ask why you favor Arsenal to beat Bayern Munich, but I personally will only say  If so far Bayern Munich has a better record than Arsenal when they meet, besides that the achievements that Bayern Munich have been able to achievement so far in the Champions League is of course proof of how strong their Mentality is,  It is not impossible for Arsenal to beat Bayern Munich and Qualify for the semi-finals, but in my opinion it is very unlikely to happen.