I allways get a kick out of that line. In the movie "On any Sunday" they discuss the reason. I don't recall entirely but I think they talk about flat track racing and how much better it is than high-siding. In truth I would say that my footpegs and handlebars scraping on the street had more stopping power than my 61' Panheads brakes
. These days I'll take tripple disks, ABS and some good rubber.