United won thanks to goals from Nani and Michael Owen.
Ferguson said: It's important for us to win all games. That's the expectation. We're delighted to go into the season with a winning frame of mind and we've achieved that. It's been a good tournament for us, we've integrated the new players well.
"They've done well settling in with players they don't really know. We're happy winning the match against Barcelona. Now we move on to matters back home and hopefully we keep our form.
“To be honest, you saw both teams – we made a lot of changes. It's difficult to gauge exactly the importance of the result. For me, I'm sure we're fit, I'm sure we've got a good squad and I've got some good young players coming through. These are all pluses – we have a squad able to deal with the demands of the English and European game.”