There could be a number of issues with the particular cable, apart from the difference in resistance that you measured. As others have noted, cables are grounded differently. You could try flipping the expensive cables around (many have directional arrows because the shield is grounded on one side only).
It may also be the case that the cable is not shielded. I once had a problem with buzzing with Kimber cables that was cured by getting another Kimber cable that was supposedly identical, but for the fact that the one that cured the problem was shielded. When the two cables were tried in a setup where noise was not a problem, the unshield cable actually sounded better, so there may be a tradeoff using shielded cable, but one that is certainly worth making if noise is an issue.
It may also be the case that the cable is not shielded. I once had a problem with buzzing with Kimber cables that was cured by getting another Kimber cable that was supposedly identical, but for the fact that the one that cured the problem was shielded. When the two cables were tried in a setup where noise was not a problem, the unshield cable actually sounded better, so there may be a tradeoff using shielded cable, but one that is certainly worth making if noise is an issue.