Braiding vs side by side?

braiding vs parallel runs is only one consideration when designing a cable.

have you considered solid core vs stranded ? have you considered multi gauage vs single guage, have you considered shielding, have you considered dielectric, have you considered connectors, have you considered method of connection, have you considered metal ?, have you considered alloy ?, have you considered combining methals, not as an alloy ?, have you considered plating ?

there are probably other variables.

i would think that capacitance is more significant for interconnects and inductance is more significant for speaker cables.