Of course, forwards helping the defense is a big problem for Real Madrid, for example. You don't experience this at Barcelona. Barcelona forward Lewandowski often helps the defense and is tall enough to clear the ball from the defense. Sometimes, a ball coming off the defense can even create a goal-scoring opportunity for Barcelona. That's why Barcelona has a very good system. Real Madrid has good fans.
I can't deny that Barcelona has an enviable system , in part I recognize that they have a great coach who took that system and has been perfecting it , the fact of advancing lines and leaving everything to the attack is a game that I have always liked , but let's remember that Ancelotti is Italian and for Ancelotti it was the defense , but he didn't have the material , therefore appealing to his game against one as attacking as Barcelona's last season , the difference was very noticeable.