Indeed, the attitude from the stylish midfielder - named man of the match against the Blues - was straight forward: "We move on."
“No, we’re not negative, everyone can see we’re a top team,” said Mousa, whose ability to maintain possession and glide past players was to the fore in such a frantic encounter.
“At the end, as a player, you don’t think too much about it, you just think how we can win the game next time.”
Gylfi Sigurdsson netted as we took control of the first half of a typically-fierce derby in the Premier League.
Mousa agreed that a second goal - Paulinho hit the post just before the break - would have been key. “I’m sure that (2-0) would have knocked the confidence out of them,” he added.
Chelsea came back strongly in the second half and levelled through John Terry, but Fernando Torres’ late dismissal handed us back the initiative and we pushed for a winner the last 10 minutes.
“In the first half we started really well, in the second half it was a bit less, at the end we’re quite disappointed because we could have won the game," said the midfielder. "Everyone had that feeling and when they had the red card, I think that was the time.”