Well if you copy, then of course the current settings will be copied too...and it's like, aside from copying, you have the "add sheet" option, which means...
Not all cars could use the same generic values, some suspension setups are so vastly different that they simply cant be used on all cars. Same would go for aero settings, just have a look at Gr.1 aero values and compare to any non Gr.1 car
Using default settings seems to be more reasonable instead of generic that cant be applied to all cars