Did they got luck or they deserve the win?
According to https://understat.com/match/12231
Well, from stats it seems a even match. Who deserved?
The stats didn't justify what really happened during the match, Valencia were totally deserved winners of match, Barca were awful in the first half, the entire team looked very sluggish and were extremely lucky not to have been 2 - 3 goals down before the break. After the break, Barca seemed to have found their rhythm and were close to scoring just before Valencia's first goal which made the task a bit more difficult, Introduction of Vidal positively influenced Barcelona's performance but that wasn't enough to save the day. Ter Stegen was the best player for Barcelona with his stunning saves, there was absolutely nothing he could about either goals.