The former England star told The Sun: "I don't believe Tevez and Wayne Rooney are too similar - because great players can always play well together.
"Rooney and Tevez do not have a lot of height but that is not the way Manchester United play. How often do you see them aiming high balls up front? Not very.
Shearer is confident that the Argentine can shrug off the media storm that has surrounded his protracted transfer to Old Trafford, having shown himself to be suitably thick-skinned last term.
"Just when Tevez was at the centre of all that controversy at the end of last season, he started scoring goals left, right and centre and kept West Ham up almost single- handedly and against all odds," he said.
"That suggests he will not have been affected by all the uncertainty over his future this summer and that he will be a success at United.
"Tevez is just the sort of exciting talent Sir Alex has always liked to sign. He has really had to go out on a limb to sign Tevez and he wouldn't have gone through all this if he didn't rate him very highly.
"But there was something about Tevez's workrate and enthusiasm that made him very popular with West Ham fans - even when he wasn't scoring goals and the team looked to be going down."