Just that they use the vented rotors in their w126 cars to help performance given the higher mass of the vehicle.

Higher thermal mass with lower overall mas means better capability to accept heat, and hopefully then higher sustained performance without needing to resort to aggressive pads.

Unfortunately man folks cannot drive on a highway without stepping on their brakes constantly. Anything that gives an advantage is of use.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)