Real Madrid is a top club, Barcelona is no more. Real have a great squad and they play at home, Barcelona play away and their squad is the most they can afford being in a deep financial crisis. Why do you think Real Madrid have no advantage in today's match? For me, this statement looks the most illogical. The bookmakers rate Real as the favorite of the meeting, which means it have an advantage.
Real Madrid and Barcelona have met twice this season in La Liga and in the semifinals of the Supercopa de Espana. Of the two matches, Real Madrid always came out victorious. The two Spanish League giants meet again in Week 29 of La Liga, I think this time the Blaugrana don't want to be a loser anymore. Because in the 3rd El Clasico, Barcelona was much more solid than the previous two El Clasico.
Real madrid and Barcelona are both showing good trends on the pitch, the quality of both teams will be determined in the match. Real Madrid is more favored because it plays at the Santiago Bernabeu, but Barcelona this time is much better than the previous 2 El Clasico.