really. all because of the chain. you see, the faint impression you get from capture 1 pro rendering is that something with a unique structure. lightroom gives you something indistinct: a rope, or wire, or chain, whatever. the correct answer is that it is a chain with long straight pieces and loops[*], as it faintly appears to be with capture 1 pro.
is this important? i think so. beyer interpolation is a way of guessing what you don't know. better guessers produce image data that is more realistic. everything else in your digital darkroom follows from that.
[* you are thinking: you already knew this. answer: i did not. after looking at the capture 1 pro rendering and thinking "how odd" I went back and examined nearly a dozen images of the suleymanie mosque ceiling with good details of the chains that hold the giant light fixture. now I know what they look like.]