The bettors are surely confident that Madrid will easily defeat Mallorca, which is not a strong team in La Liga. Previously, Mallorca had also been defeated by Barcelona. However, I don't expect Madrid to score a big margin in this match. So far, Madrid has only been able to score 3 goals against Real Oviedo. Therefore, it's likely to end 2-0.
The game was a tough one though Real Madrid managed to squeeze out a win but Mallorca made it so difficult for Real Madrid. Just as you predicted that the game was not going to have a big goal margin it ended 2:1.
This bet should have been settled as a win I guess, because Madrid won by two goals and Mallorca had a goal, it was one which Madrid had a hard time winning this game, although more was expected of Madrid but they won and got three points which I consider most importantly , so we should at least applaud them for winning and reduce the taught for the quest of them winning with more margin.