Giggs will be 36 in November and benefited from being given some rest after his excursions in the Manchester derby last Sunday, before emerging to set up goals for Dimitar Berbatov and John O'Shea, on the Irish international's 350th appearance for the club.
Related ArticlesStoke City 0 Manchester United 2Premier League photosPremier League tableSport on television "Ryan is just so important to us as a player and he is so intelligent," Ferguson said. "It was marvellous movement from Ryan for the first goal and an excellent ball to Dimitar.
"He had a difficult game the previous weekend, because he used up so much energy and put so much into his performance.
"I thought it was best to have him on the substitutes bench, but he just gives us something else when he is in the team."
Chelsea only just scraped past Stoke with a stoppage time winner earlier this month, so the comfortable nature of the victory encouraged Ferguson as he leapfrogged over his main rivals for the title this season.
Stoke manager Tony Pulis refused to apologise for his side's negative approach, after utilising nine players behind the ball for long periods and operating with a solitary striker in Dave Kitson. And he admitted United's class and experience was the difference.
"I don't know why, but we were a little bit flat and when you play against the top teams every one has to be right up for it. Giggs and Scholes are not great to watch when they are beating your team, but they are magnificent.
"Scholes was the best player on the pitch by a country mile and I don't think too many teams have come here and been so comfortable against us."