I see a home game is Barcelona's only advantage. Their squad is not much better than their opponent's. But to call that if Bayern is being slightly favored in this game doesn't meet the reality. The latest odds still slightly favor them over Munich to win the game. And they probably get one or three points from Munich soon.
Otherwise best bet here is a both team to score.
Real Madrid Manchester City Bayern Munich Arsenal These teams are without a doubt the best teams for the Champions League. Real Madrid performed better than expected last season. Ever since Bayern Munich completed the signing of Harry Kane, we have been expecting big things from Bayern Munich but so far the team has not been able to reach their goals. If they can perform well this season then their dream of winning the Champions League title can be fulfilled this season.
Experienced manager, experienced players, everything is there in this team, now just waiting to do well.