When I look at the matchups I think that the most difficult to predict result can the Napoli v Barcelona and Inter v Atlético Madrid. I mean theory there are favourite of this matches which is Barcelona and Inter. You know Barcelona are having really tough days and Xavi even announced his parting ways with Barcelona this summer. Napoli could make a surprise. Also, Atletico Madrid plays very consistently in Laliga as well as Inter Milan in Serie A, so these two clubs will play carefully, aggressive and defensive, play both of them are equally good.
Of the four clubs you mentioned, perhaps only Barcelona has a negative performance trend in the domestic league. It is likely that Barcelona will not be the favorite even though it is a big team. Because he remembered that Xavi had difficulties in several previous matches.
Napoli and Atletico Madrid have almost the same chances because both of them can be said to be not bad in the domestic league. Even so, there are always surprises that occur in the Champions League. Because the battle for prestige of all participating clubs will affect the overall playing mentality.
No chance for barcelona to stay in the UCL till semi final. Napoli may possible to kick barcelona out of the club even though it was rarely having good history against barcelona. I think that this is a sense reason to being very pessimistic about barcelona. Barcelona's attackers and defenders were performing so badly.
They are always struggling to beat the weak clubs in the serie a. Im seeing it as a very important point that i can use it to predict the future. Barcelona was not a strong team this season. It has so many weakness and it will be a disaster if barcelona to face a club like intermilan once barcelona will able to beat napoli.
I hope that match will happen again caused by i do like when intermilan was destroying barcelona. Intermilan is in the very good shapes right now. I think that we will be seeing that barcelona to put more efforts to win the game against napoli soon.
I can't trust barcelona anymore. It's caused by this club is having a lot of unsolved problems started with financial issue, dramatic coach and many more.
Not to say Barcelona have no chance. I know Barcelona's overall performance is not very good. Their performance is erratic. However, this team cannot be underestimated. They have several experienced players in their squad.
In the Champions League we have seen in the past that the favorite teams do not always win. A few years ago we saw a mediocre team like Chelsea win the Champions League title. Almost every team that qualified for the Round of 16 performed well in the group stage. So I would say there is absolutely no chance of underestimating the Barcelona team. I think Barcelona will win against Napoli.