Yes, this is the preliminary final. Many people predict that the winner of this match will win the Champions League competition this season. This entails them disregarding and underrating every other team currently competing in the league and awarding victory to either Manchester City or Real Madrid based on the outcome of their quarterfinal game. The debate over who will win this match will continue until the game is played and the weaker or unlucky team is eliminated from the competition. But before that, there will be a lot of speculation about the match until the final day.
The mentioned clubs, Real Madrid and Manchester City are promising, they will do better this season, really one of the tough UCL fixture and any sided that clinches upfront will definitely have a spot in the UEFA Champions League final, I don't mean they're the ones that will sits in good runs. This is not how the modern day football works, alot of things no longer works as it use to. There's specific differences specifically when there's huge difference in the system.