Until the last sentence, I could not understand what the "sweet revenge" would be for 
Barcelona is a stable supplier of points for Bayern and if the management of Bayern chose which to let Inter or Barcelona in the playoffs, then I'm sure they would choose Barcelona as a victory over them seems more reliable than over Inter. But the situation with Lewandowski completely changes the case, I agree. Bayern go further, and Lewandowski without Bayern goes only to the Europa League - sounds very mocking!
Lewandowski is one of the best players in the world, Lewandowski deserves a better club than Barcelona. It would be really sad for Lewandowski if Barcelona were to be eliminated from the Champions League altogether. If Barcelona are lucky enough to go through to the next round, they will be well on their way. Barcelona is a stable supplier of points for Bayern and if the management of Bayern chose which to let Inter or Barcelona in the playoffs, then I'm sure they would choose Barcelona as a victory over them seems more reliable than over Inter. But the situation with Lewandowski completely changes the case, I agree. Bayern go further, and Lewandowski without Bayern goes only to the Europa League - sounds very mocking!Lewandowski is a fucking clown. He deserves what he got. He made all this mess with the scandalous departure from Bavaria, although he could have played at the highest level for at least a year (and most likely even further) and become the top 1 scorer in Bayern history. Now his achievements look doubtful - yes, he has a good average performance in Barcelona, but in the "big" games his performance sags a lot.
Barcelona have a formal chance of reaching the next round, but what can they do there with such a rotten game?