It is true that Barcelona's defense is the best this season, which until the 8th round of La Liga, Barcelona only conceded 1 goal. It's a very good
record for Barcelona, and I'm sure the Barcelona defense will try to be consistent. This means that it is not easy for any team to score a goal
against Barcelona, It will be very interesting whether Real Madrid's prolific front line can score a goal against Barcelona. But unfortunately
Barcelona's goal productivity has decreased in recent matches. So hopefully Barcelona's front line can be productive again when facing Real Madrid.
El Clasico matches will start in a few days, but before that Barcelona and Real Madrid will play in the Champions League first, this will certainly
be a good warm-up match before the El Clasico starts. Regarding the prediction of the El Clasico match, it is likely that it will end in a draw as you said.
If we look at the two teams have almost the same strength.
Barcelona defense line is one the strongest in Laliga presently with just conceding a goal this season in the league. There are many club that have tried to score against barça but there is always an interception from barça defenders. The bluagrana boss, Xavi facing Carlo Ancelotti in the El Classico will be contended for who will be ranking first on the league table. Real madrid Frontlines are fast interms of tap in plays display and they will invade barça defenders with Vinicius Jr up and down run. The only guy I know that would have mark him is Araujo who is injured, but Christensen and Alonso can do a nice job in the game. Let's not conclude but we should put in mind that Barca will concede goals in the game even though they will win the game.