Real Madrid odds are slightly better than Barcelona. Their games in Champions League require more effort from Barcelona's players comparing to Real Madrid's one. Yet everything could happen obviously. I find Barcelona better but sometimes the concentration level is a bit lower which leads to disasters like what happened in Inter's match. Now in the next game vs Inter, it will be bad if Barcelona lose again.
After 8 rounds in La Liga, Barcelona received only 1 goal at the opposite of CL where they received 4 in 3 games.
Yes, Real Madrid's chances are better and more prepared to face the El Clasico match later than Barcelona.
Los Blancos already have perfect points in the champions league group, it is quite advantageous for Don Carlo's squad to be more concentrated in La Liga.
Unlike Barcelona, they must concentrate on the Champions League match before they travel to the Santiago Bernabeu, Madrid's home ground. meaning, Xavi's attention will be devoted to the champions league match before thinking about the El Classico party.
Barca must win this match over Inter, but if they lose. Barcelona is unlikely to have any chance of qualifying for the next round. Xavi's attention will automatically be devoted to the La Liga trophy.