We both know the fact, Real Madrid is the club that has won the most UCL trophies, but Real Madrid success in this competition does not mean that they cannot be defeated. Their success in securing a ticket to the last 16 makes this competition even more interesting, they need to prepare to face the big challenges that await them in the next round.
Atletico became an early challenge after successfully eliminating Man City. As happened in the previous match, the match against Atletico was always tough, especially this season Atletico managed to show a different performance.
You are right Real Madrid has won many UCL trophies but that does not mean they can not lose. They made it to last 16 which means competition will get even more exciting. They need to be ready for tough games ahead. Match against Atletico Madrid will be especially difficult. Atletico beat Manchester City which was big surprise. When Real Madrid and Atletico play each other games are always intense. This season Atletico has played much better so they will be an even tougher team to beat.