Bayern Munich doesn't have strong defense and it is same with Barcelona but these two clubs have good attackers. However, I see Barcelona having advantage of Bayern in this match because they are playing in Nou Camp and Barcelona have sharp attackers and quality finisher than Bayern. Lewandowski have no choice than to play against his former team. It will be his pleasure to score against Bayern.
It is known that Bayern Munich are always winning Barcelona whenever they clash for quite some times now. But let's not use the past to judge the future because things have changed presently and there is no assurance that history will repeat itself again.
IMO, what I doubt about Barcelona is their goalkeeper, Inaki Pena, his performance is difficult to be sure whether it is stable or underperforming. For the defense line, at least Kounde, Balde and his colleagues in the defense line are not easy to penetrate. In addition, there are two pivots who will go up and down to help attack and defend. I am not sure about Casado's performance, but so far he has always been the main starter. However, if De Jong fully recovers from his injury, maybe he can be paired with Pedri. Olmo, Gavi, have the potential to be played in the second half. The rest are other core players. Meanwhile, in the Bayern Munich camp, Musiala, Stanisic and were absent from the 3rd week of the Champions League group stage. One more thing, under Kompany's guidance, Harry Kane is not very aggressive in scoring goals. There were 4 goals in this competition, when they played against Manaco. However, that does not mean Bayern will not play well even though it is an away game. Kompany is certainly aiming for full points over Barcelona, on the other hand, Flick who understands Bayern Munich very well has the potential to break the dominance that in several matches has always defeated Barcelona. another advantage, Barca acts as the home team. this match, we will really look forward to.