Harry Kane scored the only goal in Saturday's derby, sealing victory over Tottenham's north London rivals with a 49th-minute header at Wembley.
'Spurs' could have had scored more, putting six shots on target to Arsenal's one, but they did not capitalise on their second-half pressure.
Analysing the game on BT Sport after full-time, pundits Martin Keown and Rio Ferdinand were critical of Arsenal´s defensive performance, with Keown slamming his ex-team's lack of fight.
"That team-talk at half-time, towards players that want to defend in the team, should have been about resolve. They got a pat on the back but it has to be better in the second-half," he said. "Spurs came at them with a higher tempo and were simply too good. It is a bit of a false dawn, the new signings and what they did last week against Everton. The resolve, desire, hunger to defend is just not there and they allowed too much space to Tottenham, and they exploited it."
Ferdinand was equally harsh on Arsene Wenger's side, claiming that Arsenal should have signed a defender in the transfer window. "It confirms what we all knew before, inconsistencies and lacking balance. They had to get a defender in January," he said, "They lack concentration and leadership in the central area of the pitch. Far too many times Spurs got through them."
"You can't just put that down to formations and systems. There has got to be players on the pitch that take responsibility and take pride in keeping clean sheets and being disciplined", he concluded.