Before you go off in the comment thread in response to this fourth reason, know this: Real Madrid has indeed grown since last season. A spectacular preseason and performance in the Supercopa have show as much. Madrid is out for blood and Barcelona is their target.
Unfortunately for Real Madrid, they cannot contain their blood lust. Even worse, this became evident immediately after proving to the world that they are ready to fully compete with their arch rivals.
This year's Supercopa ended in disgrace for both teams.
In the final minutes of injury time, a clearly frustrated Real Madrid, down 3-2, displayed some of the most downright immature behavior ever seen at a professional sporting event.
First, Madrid's Marcelo tackled newcomer Cesc Fabregas at midfield in a play which luckily did not seriously injure him. It was clear Marcelo was out to make contact with Fabregas and not the ball.
Both benches immediately cleared and so continued Madrid's display of immaturity. Madrid's manager Jose Mourinho was caught, on camera, seemingly trying to thrust his finger into the eye of Barcelona's assistant manager Tito Vilanova.
Both teams should be ashamed of the way such an important game ended, especially after both sides played their best soccer. However, Real Madrid, no matter how much Barcelona is also involved, came away as the child of the two.
Cristiano Ronaldo may also need lessons in finishing plays before they are over. Time and time again, Ronaldo made his way through Barcelona's defense only to have the ball knocked away by Valdes or another defender.
What Ronaldo didn't see after many of those defensive stops, because of his fits on the floor, was that the ball remained in play and he would have otherwise been in position to take another shot.
Not behavior you want from your top goal scorer or your manager.