I have only three HDMI cables in the house. Up until mid-2012, I had none, and all DVD players were connected to TVs with SCART.
I now have the DVD machines and a low-end Panasonic BD player thru HDMI to a newer TV, but the HDMIs are all no-name generic items. I haven't compared one to the other - because of varying lengths, I can't swap them between machines to compare, and I haven't got others to swap them with. The longest of them, at 2m, is prone to white static 'flashes' on-screen, and audio dropout, but since the layout prevents me from swapping that with another, I haven't concluded definitively that this is cable-induced.
Therefore, I have no concrete view on whether or not various HDMI cables perform differently.
I can easily admit the possibility that they do, but I find it difficult to admit the possibility that you can definitively state that they don't, based only on the subset of current scientific 'fact' that you determine is relevant.