just read from soccernet

Wenger insists the turning point this season was the win over Roma in a penalty shootout last month that allowed Arsenal to reach the quarter-finals of the Champions League.

"There is always a key moment and Rome was that catalyst," he told L'Equipe.

"Before that, we weren't losing but we were not convincing. Since Rome, we are scoring again and we have the best run going, and that is a barometer of confidence.

WRONG!

the key moment is when u bought arshavin, after rome arshavin have reach 100% for match fitness that y we became better.

in Champions league we still look ordinary. but cesc is back now so things might change.

I myself didnt think tat arshavin would improve arsenal so much. i tot he would probably eased arsenal attacking woe but with his vision and ball control, arsenal seems to retain and have most of the possession. thus rendering the need of a world class DM.

credit to denilson and song as well as they seem to have improve too.