Barcelona's hopes of reaching the final at Wembley in a few week's time look dead and buried after the defeat.
"You can imagine they're pretty depressed and down. Of course they are. We had a match we were looking forward to and we lost. It hurts, it's difficult but it happens in football," said Roura.
"I wouldn't say the referee influenced the game. We shouldn't try to hide behind that. Bayern were just the better team, very good, very physical.
"We thought the players on the pitch would be good enough for us but we didn't manage it. We didn't get [Lionel] Messi into the game. He tried very hard and it was a great effort of his to be here but we just couldn't do any more."