McLaren will show Ferrari made a grave mistake, Ferrari team boss Domenicali answered: "Clearly 'Checo' has potential.
If Ferrari had signed Mexican 22-year-old Perez, he would have replaced Felipe Massa.
But it is believed Ferrari is sticking with the Brazilian for 2013.
Massa was asked by the Marca sports newspaper if any young drivers on the 2012 grid have impressed me.
After a pause, he answered: "No. There have been good drivers like Perez, who also has had a good car.
"Sauber have been very competitive this year, so although you can't tell who has truly impressed, they (Sauber) have done a great job."