Both of these teams will feel a little hard done by after the first leg in Madrid.
Bayern Munich will point to the early part of the game when they dominated - only to find themselves 1-0 down on 19 minutes, totally against the run of play. They will feel that, in the first part of the game, they should have got the goals that would have won it for them on the night.
But after Karim Benzema had opened the scoring, Real Madrid could quite easily have scored a further two goals on the break and at the end of the 90 minutes they will feel they could have had more than a 1-0 lead to take to Munich.
However, my view is that Bayern will have too much for their opponents on Tuesday night.
Everybody has their opinion, but I wouldn't be too critical of Bayern after the first game. As I've said before, Pep Guardiola chooses to play high up the pitch and that makes the back four vulnerable at times. They have made a conscious decision to play that way because they feel the benefits, over 90 minutes, will win them games throughout the season.
Yes, the two centre-backs can get isolated at times but they get so many benefits from asking the whole of the midfield to press the ball along with the strikers and the full-backs, that they feel it is worth taking the risk of getting caught on the counter-attack.
Guardiola has been a little bit guilty of trying to invent a different type of football at times, particularly in the second leg against Manchester United. During that game, when the goalkeeper had the ball, the two centre-backs would split and the two full-backs would be pushed in the way in advance of those centre-backs.
Sometimes if it's not broken, then don't fix it. That Bayern team won everything last year and while he will have his own ideas on certain things, he shouldn't be looking to change too much.
But I wouldn't be critical of him. I like watching Bayern Munich and the way they play football. Whoever plays them at this time will probably go into the game knowing they will spend much of the evening without the ball.
Even if they played Barcelona, it would be nip and tuck as to who would have the most possession - and everybody else in world football will spend very little time on the ball because they keep possession better than anybody.
Therefore, the only chance that Real Madrid have got is to soak up the pressure, make sure they defend properly and hope that Benzema, Cristiano Ronaldo and Gareth Bale do some damage at the other end on the break-away.
I'm struggling to pick a winner in the other semi-final, but I am going for Bayern Munich to go through this one and make it to the final.