This cable is intended to transfer power from an Amp Head to a speaker cabinet so it's a quite different item with respect to signal cables used to feed the amp from an instrument.
To be clear, signal cables have to correctly transfer voltage signal while power cables have to transfer both voltage and current information, a power signal at the end.
Depending on the power of your amplifier, tens or even hundreds of watts can be handled by this class of cables.
It becomes really important that the dissipation of the cable is minimized; this aim is achieved when the resistance of the cable is minimized.
And the resistance is minimized when both the cable length and resistivity of the copper conductors are minimized.
This is the reason why I've chosen a quite short cable.
About the resistance, the value this cable exhibits is negligible: my digital multi-meter is not able to correctly measure it because so low that it's below the instrument accuracy.
I do not use the cable for high wattage and I'm really satisfied with its performance.
The only feature I would reconsider is the jack shape: because the place I use my amp, a 90 degree connector is preferable. This is something I suggest you to evaluate before buying but this is NOT an issue with the cable; it's simply a matter of personal use constraints.