Are you referring to the fact that 7up/Dr pepper are distributed by pepsico? They still have historically been independent from the big 2 as far as product branding since inception, most recently being owned by Schweppes.

Dr. Pepper is distributed by Coke in some states/countries, Pepsi in others, and by its own distribution network in like 30 US states. A friend likened it, not without a certain verisimilitude, to the result of the Treaty of Tordesillas in 1494.

I think they were just giving an example, and had assumed each separate flavor was a separate company, but happened to choose a bad one with 7up as it is a different beast then the rest.