Vidic accepts would be a surprise to go top today with victory over Blackburn Rovers given United have drawn seven of their 14 matches so far.
"I am surprised at where we are," he said.
"When we started, if someone had told us we would have this many points at this stage of the season we would have been disappointed.
"But actually we are not in a bad position.
"We saw last year teams are better and are competing more against the top four or five. And this season the top five have all lost so many points.
"It puts us in a higher position than we might have thought, the same as Chelsea.
"But there is still a long way to go. This is definitely the time to play the best football we can and to make sure we win the next few games."