The Frenchman insists the Gunners will not be intimidated when they visit the Nou Camp next week.
"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.
"Some of the players are much better this year than before - Theo Walcott, Jack Wilshere, myself.
"We've all stepped up and become stronger and more macho. Players have stepped up and driven the team forward. We can compete with everyone now.
"We approached the game differently this time because last year we were a little bit scared of Barcelona.
"It was the first time we had played against a team like that.
"They were fantastic and played amazing football. We were really surprised at how good they were.
"This year we've said, 'listen, they are the best team in the world, if we beat them it will be fantastic. If we lose, it will be normal because they are the best team in the world'.
"We went in without pressure and played our game. We showed everyone we can beat them."