Hmmm ... there's quite a difference between "the pipe" and a "Brylon" pipe. Brylon is wood dust suspended in a nylon polymer; in a typical Brylon pipe, the material is molded into a bowl. "the pipe (sic)" has a tobacco chamber lining of pyrolytic graphite inside a Bakelite shell, with airspace between them as an insulator. Pyrolytic graphite tends to conduct heat, while Brylon is an effective insulator.
Beyond this, I can only guess; I've never smoked "the pipe," and my Brylon experience is limited to three Medicos, which are heavy, smoke hot, but have proven to be reliable bad-weather pipes (my Lancers produce a nice smoke when used in very, very cold and windy conditions).
I am very impressed with Dr. Taylor's site. Enormous amount of fascinating info there, and he documents the traffic of his collection with such loving detail. :clap: