A part of me feels Atletico Madrid will win that game. It's indeed a difficult game to predict. Real Madrid might have a one-goal advantage, but when these two are concerned one goal is not that much.
Real Madrid were able to win the first leg of the match, but wasn’t really easy for them, the first leg was played at Real Madrid home, and they struggled before they could get a win in the match, Atletico Madrid will be hosting Real Madrid in the send leg of the match, seriously the match is just going to be a interesting one, and will be difficult to predict, they both have equal chances of winning the match, and I won’t say a particular team is better.
Let’s just wait and see how they both will perform during the second leg of the match, Real Madrid are already ahead of Atletico Madrid with a goal difference, which is going to be a great advantage for Real Madrid, but a goal difference is not so much, anything can still happen, but I will prefer Real Madrid get a win in the second leg of the match also.