Van Damme and Chord Odyssey

The speakers are 4 ohms

Yes - especially if your woofers show deeps down to 3-4 ohms in their impedance curves, because in this case, the resistance of the cable would become proportionally more important, and therefore no longer indiscernable.

So the Lo-resistance has to do with bottom end? Hopefully someone with direct use can chime in

Looks like chord odyssey is a silver-plated 3.3mm2 copper.
Not sure it does match the van damme 4mm2 low resistance, even with the silver...
I would stick with the van damme, they are so much cheaper, and their clients list kind of says it all on sound without even getting into the science.