Dekker if we look at that, backwards, it has to detect wheelspin/and or a sudden, odd, increase in rpm, then reacts.
Now, theres no way human reaction will be at 250 ties per second..well, Motophoneman probably can, but for sure not me.
You know what the answer might be?
As kids, riding out on the Bonneville Salt Flats, we learned fast. We did our best to imitate our favorite dirt track stars by power sliding. You learned that chopping the throttle, during a slide, was a bad idea. If you did, and were moving fast enough, you went over the bars. When that rear wheel was out, then stopped sliding, the front followed, and you were flying like superman.
So, I bet this system does not do this. It would be horrible if it did.
So, it must gently reduce the power, but not so much as to stop the slide 100%, which would likely result in a crash.