As for this topic. It's Roma as the other two losses never meant anything. Title was already won when we lost to Levante and Espanyol only won the leg and not the tie.
Roma wasn't painful to me it was only humiliating. Bayern hurt.
One club was a cinderella story, the other was a giant club steamrolling us and clowning us hard while we had peak core Barca players who showed up out of gas.
Chealsea second leg 2012 and by far.. 2-0 already against 10 men with the best player of all time, 2 best midifelders ever.. in camp nou .. and we loose an opportunity to play the final like that. That was the only time ever i destroyed my phone out of frustration. still remember that nightmare.