The Arsenal boss admitted that luck smiled on his side with the deflected winner from Fredrik Ljungberg, but insisted television replays were inconclusive on whether Thierry Henry was offside in making the run that resulted in Robert Pires' leveller.
"I was very concerned, they had the chances - especially in the first half," he considered afterwards.
"We needed a bit of luck and that is what we got with the second goal and that could have been a consequence of our determination.
"I must say that Tottenham played very well and they can feel hard done by.
"I don't know if Henry was offside or not, the TV people have told me you can't tell. The second goal, of course, was a lucky deflection.
"Tottenham played well and made it very difficult for us. We know if we want to do well in the championship we have to do well in the derbies. Of course, the biggest emotional derby is Tottenham."
Arsene Wenger conceded that Spurs could feel 'hard done by' following the narrow derby win for his team on Saturday.