Real Madrid really need a win against Valencia because Barcelona beat Betis yesterday and are 3 points further away from Real. But I think Valencia, who are at the bottom of the standings, will not be a difficult task for Real Madrid and they can get closer to Barcelona. Valencia are playing very poorly and losing even to weaker teams. Real Madrid are no match for them.
At least Real Madrid reduced the points from Barcelona, because for Madrid this fight should not be wasted. Moreover, I don't expect a draw score, with Valencia condition which is not too optimal lately, Madrid has quite an advantage.
Not just their conditions, Valencia is not a match for Real Madrid, though they put in some effort in their last encounter in Spanish Cup, they put in a good fight against Madrid but gave up along the Penalty after two missed of penalty from Valencia but I don't expect similar stuff right now, Real Madrid need every point to follow Barcelona on that standing, they wouldn't give up on this fight easily.
It is possible that Barcelona will continue to lead the top, with high points from the pursuit of Madrid, it seems appropriate if Barcelona takes the La Liga trophy. They have recovered from last season. And with the support of solid players that Xavi has now looks much more promising. Apart from all that, the impact of the world cup is that many young Spain players are more confident.
When a team received all the hype they needed from the public, just know that they are inclined to disappoint the public in future games, they are not that far by the way if only Real can just win their next 3 matches, they would come close if Barcelona wears out of energy.