That absolutely does not follow. Test pilots are prepared and trained for the extremes of control. It's a totally different skillset.

The point of the test flight is to push the plane as far as it will go. Practically all drivers, regardless of skill level, will lose control if you have them hydroplane a car. Race drivers will not. With a couple advanced driving classes suddenly most people will be able to handle a slide much better. There's a gap in experience, not talent. There is no such gap between any two normal drivers.