I think you guys are forgetting how much pressure there is on the drivers in karts. Having been on both sides of the paddock (karts and formula cars), I don't see much difference in the "pressure" between them. In both arenas, the best drivers are pushing themselves and their cars to the limits, and parents and driver coaches are pushing the kids just as hard.
In fact, when my son jumped from shifter carts to Formula Atlantics, after his first session in the Ralt RT-41 he jumped out of the car, laughed, and said that it was like driving a big, heavy kart in slow motion. He still likes to drive the kart about every fortnight just to stay sharp.
Let's face it, those kids can adapt to cars a lot faster than we generally give them credit for!
