How was Barcelona the favourite for the Champions League last season. There can never be only one favourite for it. If you had said, Barcelona were one of the favourites then it's very valid. Liverpool was seen as one of the favourites but exited earlier in the competition. PSG was one of the favourites as well, same as Bayern Munich too. All I'm saying is that, there cannot be only one favourite, there's always two or more favourites to win a competition.
Perhaps, he's just airing his personal opinion on the favourite team to win the champions league last season and it's fine if he chooses one team as the favourite team to win but what I don't understand is where he said it would have been better if Barcelona won the champions league last season. Like, I don't really get where that statement is coming from because champions league or any other competition is not won by our emotions or how which team deserve to win it, it's basically won based on a team performance and not by masses or public opinion like a constitution reform. It would have make some sense if he had mentioned Liverpool thou because they were the most consistent team in the champions league last season until they were unluckily eliminated.