Not quite. While yes that is in a gauge format, knock is not something well represented by an analog dial. Unless it flashes and beeps past a certain level, it is mostly novelty to me.
I want a simple LED linear meter in a gauge that beeps and flashes past a user set point. I don't want to see or hear anything out of that thing unless there is trouble.
Try monitoring that gauge when at WOT. How do you discern between 40 and 60 (what is it in %?) You are in knock trouble for a split second.