Atletico Madrid will only do their best and nothing more. Atletico qualifying for the next round of CDR is on a very slim chance. The game might see some level of difficulty for Madrid but the Los Blancos will always have their way around to getting their easy win over Atletico. Real Madrid will be more concerned in winning this cup as they are in winning the Spanish league. So it will be a tough night for Atletico
Everyone would expect Real Madrid to win this match in the end, but I think it's always possible to get Atletico Madrid to win it.
Real Madrid are quality team but it is always possible to expect them not to win one or more important matches. The probability of victory was high, but that would only depend on how well the player performed in the match. Consider Atletico Madrid to win, but that has a low probability.
There is only 1 ticket to the semifinals, both teams will desperately win it. Don't underestimate Ateltico Madrid even though this match was played at the Santiago Bernabéu Stadium. For other matches, Valencia and Bilbao were still tied at 0-0. Bilbao is likely to be expected to be success for 1 ticket, but Valencia is also possibility.