Redkiwi: Your conclusions are faulty. The issue is whether there is real benefit to bi-wiring, not in whether the circuits are the same. There is proven benefit to minimizing the speaker cable resistance between the speaker, especially the woofer, and the amplifier. There is only anecdotal evidence -- no positive results from blind testing -- that bi-wiring improves the sound. Therefore, it's far more likely that joining the wires at the speaker would improve the sound by reducing the series cable resistance through parallel wire paths than separating them into a "bi-wire" arrangement, which doesn't take full advantage of the conductors available.
Jerie: Any component can and should stand on its own performance, regardless of brand or model. Speaker wire, however, has a single purpose: to deliver audio in the form of electrical signals to the speaker. The ideal wire will deliver exactly the same voltage to the speaker as the amplifier produces. No wire is perfect, but it's easy to get close enough for practicality by minimizing the electrical attributes, primarily series resistance but to a much lesser extent shunt capacitance and series inductance, that degrade the signal voltage. That's why speaker cables that work best tend to be as short and fat as possible, regardless of brand.