it kicks in if the wheel speeds vary by a certian amount.. since you are changing the speed of the ABS rotation vs the actual vehicle speed, I suppose you are technically correct, as the real world conditions which would achieve the needed percentages would change slightly. I don't see this being what makes or breaks a crash though. the other thing to consider is that as long as all the tire sizes match, ALL abs sensors will read the same variance. so it would be (follow me here, this is lingually complex) the difference of only the change in the variance of the difference between the expected and actual vehicle speeds for a given abs-read speed.
yuck that was messy, but I believe we can call the topic fully discussed at this point. lol
and you thought calling acceleration "meters per second per second" was a hard concept to understand? LOL