A lot of United fans need to stop feeling sorry for themselves. I'm guessing it's rare but even if you started supporting United post Ferguson you've seen the Club win an FA cup, League cup and UEFA cup, the vast majority of English clubs could only dream of winning that in their entire history.
Winning the European Cup is a great achievement but it's just a cup competition, as such you're forever in the arms of a bit of luck, a bad referee or a mistake here and there, every club in their history can look at what ifs when it comes to cup competitions. Look at it like this, English clubs have won the European Cup on 14 occasions and on only 4 of those can the club genuinely say they are the best club in Europe, In the modern champions League era that has happened only twice, by a single club, I don't need to tell you who the club are.
So yeah Chelsea have two European Cups to our three now, closed the gap but never once in the history of their club can they claim to actually be the best team in Europe, only two clubs in the entire history of English football have that right and United are one of them. Stop looking at failures and be proud of the amazing things we have actually achieved in Europe.