Let not mixed things up here about Manchester United. They were able to finished in a reasonable position in the Europa league simply because they haven't faced any strong opponent yet. Let be realistic here, can they really be proud of their performance yesterday against FCSB? Did you see how they struggle against an unknown club? The fact that they finished amongst the top and qualified doesn't mean they are really playing good games at the moment. I'm scared they might not be able to go far in this round because they will be facing more stronger team and continue with this awful performance will eventually get them eliminated. That yesterday victory was totally not convincing at all considering how incompatible they were against the team they played against.
Are you claiming that Manchester United were able to finish in a decent position just because they played against weak teams? I can't consider any team weak in this tournament because they qualified for the Europa League. Which weak team does Manchester United face during the group stage? Can you say Rangers, Porto and POAK aren't strong teams? Perhaps you mean Bodoe, Twente, and PIzen are poor teams. Did you believe that if Tottenham Spurs had played against all of the teams that Manchester United defeated in the group stage, they would have finished fourth?
However, I do not think you watched Manchester United's game against FCSB; even if you did not, I believe you should review the game numbers to determine which team dominated during the game. Manchester United controlled FCSB throughout the game, but they were not able to score a goal in the first half. Let us wait for the next round of the game to see how Manchester United plays, but at this point, I am confident that they are going to make it through the next round if they continue in this way.