If all predictions were accurate then there will not be any need to watch the games, and that is what makes sports interesting, however casinos are experts at calculating those odds as that is the most important part of their business, so chances are that one of the teams at the top will get the championship, however at this time the overwhelming favorite seems to be Real Madrid, and if its players can remain healthy, it is going to be a real challenge for other teams to beat them.
Some people actually take predictions of games to seem like a 100 percent thing forgetting that it's all speculation. No sports can be 100 percent correct or forecasted. It will always be based on predictions and most of the time, the degree of accuracy of most predictable games are due to the strength of the teams involved in the challenge. When you have bigger teams challenging small ones, you have situation where predictions are tilted towards favoring the bigger teams than the small ones.