Liverpool deserves the utmost respect for their history, their good campaign, their very brilliant coach and how dangerous their forwards are, but in all honesty, I don't think they are a better team than Atletico or Juventus in 2014, 2016 and 2017.
When I watched those teams I always had a feeling their standard game was about always being in control, showing extremely solidity in defense while being lethal in attack when needed. They were also capable of beating very strong teams belonging to the European royalty with great authority. It would've been interesting to see Liverpool face some of the clubs these two teams had to beat in order to reach the finals.
When I watch the scousers it's like they have two faces, even in the same game at times. It's like they have a plan and if everything clicks they are able to dictate the game, but if that doesn't happen, they are prone to suffer a lot. I don't really know how that part works with Real Madrid actually, because in finals they very rarely panick and have a great variety of weapons to counter many kinds of styles. I've also noticed how Liverpool reduce their performance in the last minutes of games. That can be a huge problem against a team that might have guys like Asensio, Bale, Kovacic, Lucas Vazquez in the bench, all of them very physical , either to defend a favourable result or to try going to extra time.