The Spanish striker will face his old team for the first time Sunday still looking to justify his weighty transfer fee, which was a record in a deal between two English Premier League clubs.
He has scored only five times in 30 appearances since leaving Liverpool for London in January.
But Villas-Boas defended Torres' record ahead of the game at Stamford Bridge and said the measure of the 27-year-old forward's value should be broader.
"It's not just a question of numbers and goal scoring. It's about how you make your team perform around you," Villas-Boas said. "He's one of the best [with] assists at the club, four or five. He's assisting people and the team are getting wins out of it."
But Villas-Boas gave the signing a ringing endorsement. Asked if he would still pay the same amount for Torres today, he replied, "Of course."