Real Madrid has very good history when they played at home. They often did some magicals to comeback even when they were at the critical situation. That might be the reason why the are in favor to win the game. However, can't really take google as a good source to predict.
I meant Madrid is not in a good position and they went down 2 0 in term of aggregate. I'm guessing they will against the wall with 10 men + 1 goal keeper in the penalty box. It's such a hard situation for them to secure three goals without conceded a single goal.

The pressure is high for them, but i hope they can sort it out. I'm not in favor them to secure a spot tot he semi final, but hopefully they can manage it to happen.

The chance is more likely half them and half Arsenal.