Bayern's weekness is a few players who are inconsistent and / or minded for personal glory not the team, and that their manager atm isn't concerned with tactics, by accounts he just lets all the players do their thing on the pitch, which is good enough to beat most teams, but isn't good enough to win the champions league (albeit come close, and really should have done, they'd be lucky to face a team giving them so many chances in the final again) and not good enough to beat Dortmund who have an excellent coach, and a team brimming with confidence.