Samir Nasri has declared Arsenal are capable of overcoming Barcelona because they have developed into a more "macho" team.
The Gunners head to the Nou Camp on Tuesday for the second leg of their Champions League round of 16 clash convinced they can stage another stunning upset.
A 2-1 victory at the Emirates Stadium has offered sight of the quarter-finals, the stage at which Barcelona dumped them out of the competition last year.
Nasri revealed the Spanish champions were viewed with awe when they met in 2010, but stated reverence has since been replaced with belief.
"Barcelona seemed much better last year because we've become more macho, both physically and psychologically," he said at the adidas launch of the official match ball for the UEFA Champions League final Wembley 2011.