That is the lowest resistance of any helically wound wire. The low resistance results in less loss in spark energy so more reaches the spark plug. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire.
They are still better than most brands, but like every thing else, not what they used to be. The previous set of these lasted 5 years. This set the plug ends are very easy to wad inside and won’t lock on the plug. The silicone one the boots look like they will burn easy.