Granada should be an easy win for real Madrid especially with the kind of form they are currently on now, Real Madrid have had a very good season I would say especially when it's comes to the champions league progress but their games in the La Liga Santander looks kind of edgy but I think Granada would be an exception for them to win.
For the case of Barcelona and athletic Madrid, that's a totally different atmosphere and I think the game is going to be very tough and I would predict a draw atleast in that game and besides no one of the two teams would love to lose any point but Barcelona playing home would be an advantage to their benefit.
Of course Granada is an easy win for Real Madrid because there performance and quality are not equal and however Granada this season is just a free point to so many other clubs on the league because this season they have gotten the highest losing ever, although I was thinking there performance will improve this season because they came from Relegation and since they did not improve on there performance this season they may likely go back to the relegation stage again.
So however this match will really be good for those that plays bet because there would be a lot of goals from Real Madrid because Granada has no good defense that could prevent real Madrid from scoring.
Obviously, Real is doing wonderful so far and their momentum is great and I think they will do even better, but at the end of the day it's another game and in football if you do not care enough about your opponent then they might shock you. So even though they could dominate and win easily, they should still play with their 100% in order to win, if they give up and not care and underrate Granada, then they are going to get an upset.
I do not think that will happen though, Real is a team of discipline and they will probably end up with a good easy big margin victory here too, I bet on 2.5+ goals for the game, not the winner, but I think Real will score a bunch of goals, even a 3-0 victory wouldn't be too hard for them. They seem like they may get the title this season without a doubt.