The key is that each type of overcurrent protection has a curve associated with it, in that if there is a high fault current, the device operates quicker than if there is a low fault current (or for that matter an overload). The arc fault current is 1/3 to 1/2 the value of the bolted fault current, and that must be applied to the curve to see how fast it will clear before you can try to use the table. Most don't know how long the device will take to clear before using the table.
They should perform the detailed calculations in NFPA 70E or IEEE1584
