The Tottenham manager believes the fear of facing Manchester United has dwindled following the retirement of the 71-year-old and appointment of the former Everton boss
Former Everton boss Moyes replaced the 71-year-old at Old Trafford after the legendary Scot retired last season, following his 13th Premier League title at the club.
And Villas-Boas, who saw his Spurs side go unbeaten against the champions last term, believes the fear of facing United has lessened significantly ahead of the 2013-14 campaign.
"The aura that Sir Alex had, David Moyes does not yet have," Villas-Boas said, according to The Times.
"This could have a direct influence on the players of Manchester and their opponents. United had, because of Sir Alex’s history of winning, an aura of invincibility.
"The fear made everything harder and may continue if [Moyes’s] adaptation is fast. The structure and squad are top, but there was one voice. I am curious to see [what will happen]."