The 23 year-old is adamant he is just one member of a team and wants to spread the focus this season at Old Trafford.
"I am comfortable with the extra responsibility now Cristiano has gone," said Rooney.
"There have been big expectations on me for the last seven years so whether he was here or not I would still have that.
"But I have never looked at myself as being the main man. It is a team game. I won't win a trophy on my own."
Judging by Ferguson's team selection in the Community Shield, Rooney will be spending most of his time partnering Berbatov this season.
If Rooney has little to prove, the Bulgarian certainly has after a distinctly mixed debut campaign following his club record £30.75million move from Tottenham.
"You can see in training and games during pre-season Dimitar has looked sharper," he said.
"He looks like he is more determined.
"He is tracking back with the full-backs in pre-season and is definitely working harder and trying to impress.
"He is a brilliant player. He has so much quality he has got and we all want him to show it."
Berbatov's presence is one of the reasons why Rooney is not concerned about the massive spending of both Real Madrid and Manchester City this summer.
"There is no element of jealousy at the money City and Real Madrid have been spending," he said.
"If our manager felt he needed to spend he would. I think the manager has probably got it right."