~Snip
If we talk about the perfect club we will never find one like that, maybe they never lose but they still draw. So far I've noted Leverkusen who can do that but they also still draw, yes even though they never lose. In football a draw will still count as an unsatisfactory result.
All with their own advantages and disadvantages, every time 2 clubs meet, they will always look for gaps where their opponent's weaknesses lie and if they can be utilized properly they will be able to win the match.
But other factors also sometimes affect the outcome of matches, one prominent example is luck. No matter how strong and how many chances a club can create, they won't be able to score if they are unlucky in the match.
I really agree with your last point, without luck a team may not win the match. Luck is part of the game, but good performance and creating a lot of chances allows a team to increase its chances of winning a match. In the Champions League, there are only 3 teams this season that have never dropped points until they qualify for the round of 16. Bayern Munich, Real Madrid and Manchester City are the 3 teams I mean, in fact I am sure they will maintain that record to qualify for the quarter-finals.
In the round of 16, we will probably easily determine favorites in many matches. Bayern Munich, Real Madrid and Manchester City are favorites in their respective matches, while Arsenal, Inter and Barcelona are also worthy favorites. PSG and Dortmund are also favorites, but I tend to think that the first 3 teams I mentioned have a good chance of securing a ticket to the quarter-finals.
I don't really count Barcelona as a worthy favorites @BITCOIN4X. I mean look at them, struggling very hard right now. Currently in the 4th position in La Liga and recently they barely won a game against Almeria which is the bottom team in La Liga right now. If you had to ask me, I would agree with the teams that you have selected as favorites. Bayern Munich, Real Madrid, and Manchester City are looking good although Manchester City has recently been struggling but I think that is due to the injury of some key players and they will come back very easily.
As for the worthy favorites, I would include Inter Milan, Arsenal, PSG and Dortmund. PSG and Dortmund lack that class and that is what is stopping them from becoming the favorites. Arsenal on the other hand are doing very well for the first time in UCL after a lot of seasons so there are chances that they might win it. Inter Milan are also looking good in their own league as well. We just have to wait for February to see what happens.