Roberto Martinez believes Manchester United's mental strength is the one thing that sets them apart from Barcelona.
The Catalans have beaten United in two Champions League finals in the past three years, showing their dominance on the European stage at Wembley in May, putting United to the sword with a thrilling display.
But Spanish boss Martinez does believe there is one area United have an edge over the Nou Camp side.
"In many ways they (Manchester United) are better than Barcelona - that's just down to the mentality, the belief and they way they approach games," Martinez said.
"What Barca have is the way they play the game, they are very unique, you won’t see another team in world football that will rely on 900 passes to win the game. The pattern of their play is impossible to compare.
"But United have a blend and mentality in the squad that is the best in world football. It’s just a matter of beating a team like Barca in a one-off game and see who can be European champions, as I believe they are on a different level than anyone else."
Meanwhile, club favourite Lou Macari is stunned by United's fast start to the season.
With five successive wins under their belt, United top the Barclays Premier League table by two points from neighbours Manchester City, and have impressed on lookers with their fast attacking style.
"I can't believe it," Macari admitted.
"I worried about Paul Scholes going, Gary Neville going and especially Edwin van der Sar as he's a keeper and it's a specialised position.
"I was just thinking at the start of the season that these new lads haven't experienced what it's all about at United. We've got to give them time to settle but they've come out of the starting blocks fast and are getting faster!
"Some of the performances have been brilliant and someone said to me we could go the whole season without losing a game at Old Trafford. I thought that's not going to happen but the more I think about it, we won 17 and drew one last year and I don't see who can stop us at home going for 18 out of 18."