Honestly, the strength of Aston Villa and Young Boys cannot be compared. Aston Villa is clearly stronger this season and Bayern Munich lost when facing them while Barcelona won big when facing Young Boys but lost when facing the league 1 team Monaco. In my opinion, the strength of Barcelona and Bayern is not equal. I think Bayern is still quite superior in the UCL at this time. I think Bayern Munich will probably beat Barca's troops later.
That could indeed happen because considering the level of strength possessed by Bayern Munich is still quite strong in the Champions League this season. So Barcelona must play more carefully because Bayern Munich is a team that always takes advantage of good opportunities in important matches. But I don't think Bayern Munich will win with a high score at Barcelona's home later and if Bayern Munich players make more mistakes in the match, of course the victory could be obtained by the home team, namely Barcelona.