My understanding is an ION-Sensing system is very sensitive and able to make adjustments as necessary for each combustion cycle. Using a small electric current running through the spark gap, it can sense combustion efficiently, and detect knock with extreme accuracy.
Again my understanding is this type of system is superior and less costly then a "knock box".
Try and put yourself in the manufacturer's place. My guess is since Link has created their own seperate detection system and need to realize a return on their investment, it does not make sense to engineer a new strategy, even if it's