Don't take it personally. Arsenal fans on here won't accept you saying they were anything other than world class when they've won. They won't accept anything else when they've squeezed past a team. Or when they've drawn. Or lost. Or been demolished. Just sing 2 verses of the set piece coach song and you'll be forgiven. Go in peaceIt was a very well deserved win and your fans have every right to celebrate what was an unforgettable footballing night.
But even then one has to admit that arsenal have problems when it comes to finishing, a few inches here and there and assuming the rest remains the same arsenal would only have a very fragile one goal cushion to show for their efforts.