Lol, Barcelona isn't mature u said. Like in what way??
The said club is currently leading Spanish toughest league which the same real Madrid is also a contender.
You have mentioned that FCB dominance in La Liga is de to Teal Madrid's tiredness but what causes this tirednes if I may ask?? Madrid were in
Research shows that  when Barca won won,  real Madrid's players were on ink jury and that's the same thing that occurred in this second leg ( barca are also on injury>>> De long, Memphis Depay and Perdri).   I'm not Barca fan but I know they do better than Madrid in terms of H2H clashes.