is there a performance difference between the two copper cables?, or is it purely cosmetic so it blends in with the bricks of the house?
Even if the 2 types have different conductor sizes, the difference in performance over the short distance of the drop wire compared with the distance of the cable from the cabinet to the DP would not be measurable.
Brown Down Lead and Drop Wire 11g are both 0.5 Copper.
The only difference is Drop Wire 11g has more twists, which is better at filtering out noise but when you’re talking about 5 to 15m of cable that’s gonna have zero impact.