I'd say it's fairly obvious what I meant, however seeing as you can't seem to understand the simplest point...
The squad wasn't good enough, the facts are there for all to see. On our day we could compete with some pretty good teams, but by the same token we could easily get horsed by supposedly inferior opposition.
In games like the draw with Bayern and the Copenhagen win, we needed every player on the pitch to perform at the top of their game and hope that some of the opposition had an off game. On top of that, you need to take every chance that you get, no matter how few. The Copenhagen game, especially, was a freak result where every time we broke forward you just knew it was going to be a goal (the same goes for Man Utd when they beat Roma 7-1).
The same is said, but in reverse, when you talk about the QOTS semi. Every one of their players performed out of their skin, some of our players had an off-day, and they capitalised on every mistake we made. Just like the Copenhagen game, every time they got in our box we knew they'd score.
This doesn't happen for a single reason (i.e the manager isn't solely to blame ), but for a variety of reasons explained above. Couple that with the fact that we've not got a great deal of top quality players in our squad, then you'll continually get these freak results. A handful of decent players will win you games, by the same token if they play poorly there's a chance you'll get turned over.
Using your logic, we should've reached the UEFA cup final as we beat Rangers and they managed to get there. This logic is similar to that of a primary school child.
"We beat Rangers 4-1, and Rangers beat Dundee 6-0, so that means we should score 10 against Dundee"
Football isn't as simple as that.