Let me point at least one contradiction in Manuel's thinking.
On the one he claims that what is most important in CL KO football, is not the strength of the team per se, but the match-up. He actually examines the possibility of CSKA Moscow proving to be sterner test than United for us, and he also uses Rubin Kazan as an example of a team that is a horrible "match-up" for Barca.
On the other hand, he uses the example of Arsenal (a team that he claims is a positive "match-up" for us) as a second placed team that caused us more trouble than any of the other three first placed teams that we had to face. Well, if match-ups were so important (more important than potency in absolute terms) then we should have annihilated Arsenal, but we did not. Actually, last season, Arsenal were the only favorites to have failed to win their group, and we were unlucky enough to draw them. In the end, we found ourselves a Nicklas Bendtner toe-poke away from humiliating CL disqualification, plus we suffered our only defeat in last year's European competition at the hands of Arsenal.
My opinion, is that what is most important in football, above all other variables (of which there are numerous) is the quality of a team's players. But that on its own cannot sufficiently explain, the fluctuating results we tend to observe in football. This constant, must be combined with the wildly fluctuating variable of physical conditioning. To provide two very clear and contrasting examples, just compare two Barca games from last season. Our home defeat against Hercules, and our thumping of Real Madrid two months later. Same players, same tactics, same pitch, same manager (for us) In the second case, we have infinitely stronger opponents and presumably coached by a better manager. Yet the game against Hercules finished 0-2, while the game against Madrid finished 5-0!!!
What variable was it that changed? Was it a case of a match-up? Was it tactics? I claim not. It was a massive difference in the physical conditioning of FCB...