The midfielder says the frustration of the Emirates crowd played right into his side's hands.
Swansea City midfielder Jack Cork has claimed that the Arsenal supporters made it easier for his side to come away from the Emirates Stadium with three points, as quoted by the Guardian.
Ashley Williams scored a second-half winner as Alan Curtis' struggling side came from 1-0 down to win 2-1 on Wednesday night and boost their survival hopes, simultaneously denting the Gunners' title aspirations.
The home crowd became noticeably agitated as the second half crept forward, and after Arsene Wenger's decision to replace Joel Campbell the frustration began to boil over.
Just 10 minutes after that change Swansea completed their turnaround, and Cork, who set up Wayne Routledge for the first-half equaliser, says the mood of the home supporters made it easier for the Welsh side.
He said, as quoted by the Guardian: "At half-time, Alan [Curtis] just said: ‘We have a good opportunity at 1-1’. He said he could sense the crowd were turning on them and everyone has big expectation to do well.
"You could sense it – if we could get on top of them, we could nick it. We’ve had a pattern at the Emirates and we managed to do it again.
"Arsenal had Sánchez, Özil, Giroud, Ramsey; such good quality. But when the crowd turn on you, it makes it hard to play. We’ve had it at certain times this season, when we weren’t doing too well and it does affect your confidence, at times."
The victory lifted Swansea to six points clear of the relegation zone, and also left Arsenal the same points gap away from the top of the table.
Both teams have vitally important matches ahead this weekend, with the Swans hosting fellow strugglers Norwich City whilst the Gunners travel to title and North London rivals Tottenham Hotspur.