Scholes, 37, retired from football at the end of last season after 17 years at Old Trafford, but was asked to make his return following a string of injuries to United's midfield.
He made his second debut for the club in Sunday's 3-2 FA Cup win over Manchester City, coming on as a 60th minute substitute. In his half-hour cameo, Scholes went on to make more passes than any City player managed throughout the whole game, with a 97% completion rate.
However, one of his mis-placed passes led to City's second goal.
"There were no negatives as far as I was concerned," Ferguson told Eurosport-Yahoo.
"One or two people have been negative. They're making out it's been a 'regressive step' for Manchester United. He's not going to play every game but in terms of composure and passing ability, is there a better player going around? Definitely not."
United currently sit second in the Premier League, three points behind league leaders Manchester City.