"But that is what the club is all about and if you want to be successful in the championship and the Champions League you must have a good squad. I think we have that."
Vieira also stressed that records mean little to the players. "Setting records is one thing but winning trophies is another," he said.
"To be successful we have to take game after game and that's why we are doing well. It is only five games but we are really happy with the way we are performing.
"We have fantastic players up front who can make a difference at any time and at the back we are really solid.