Wow, I figured that a nice cable wouldn't really make much difference, so long as the cable you had been using wasn't just oxidized copper or something of the like in terrible shape, but I didn't think they would be worse than what you already had. Of course this is just one manufacturer, and maybe this was an off cable, but that is giving them the benefit of the doubt, that's for sure.
Even still, this post further proved that...
1. These fancy power cables (probably the higher end interconnects as well) are really overpriced.
2. The stuff that goes into these is absolutely nothing special that a diy-er can't do for much less.
Good stuff OP, good stuff.