Did sir alex ferguson get it wrong in the CL final?

It wouldn't have mattered what side he put out they would have been outplayed because if they had tevez giggs ronaldo rooney and berbatov all on from the start at the same time barca would have had a field day when in possession of the ball who would have won the ball for man u then sir alex got it right to put carrick and anderson in to win the ball he didn't know that anderson would play that bad.