I think people are sleeping on Atletico Madrid this season, they have a solid squad and a great coach, they could make a deep run in the UCL, especially if they can get their defense clicking properly.
You can't really say this once Atletico fight Real Madrid. I know Atletico is better, but Madrid is far better than them. I'm still in my choice to favor Real Madrid to win the game soon.
If Atletico is good enough, they could be winning UCL, but it almost never . It's kinda different with Real Madrid with its a lot of UCL trophies.
As long as Real Madrid can have its forwards working properly, it's easy to breaking Atletico's defensive line.
Maybe he still hasn't seen how Real Madrid's attack is in the Champions League which has even been proven with the 15 trophies that Real Madrid has won. I also quite agree with what you said because Atletico Madrid sometimes makes their defense more solid, but it will not be impossible for Real Madrid's attackers to break down when they face each other in the Champions League. So in this case I am also still more confident in Real Madrid in terms of winning the match than Atletico Madrid even though Atletico is in their best condition this season.