SO TRUE!I think you need to define the parameters. Best driver or best racer? For example Warren Johnson is not a "Great" driver and he will be the first one to tell you that. How many times has he said the only reason he drove was because when he started "Kurt was too young, Arlene didn't want to and the dog couldn't get a licence" But he is a hell of a racer! Many you have listed had a sizable performance advantage and didn't need to be a "Great" driver.
If the Erica Enders of today was driving the Warren Johnson car of the late 90s early 2000s and they would have won every race that the car didn't break.