Ali-Frazier IV is one step above that. You can use the word gimmick. Like anything in life, there needs to be a gimmick. A gimmick is nothing more than a marketing tool. It's a way to get your point across to the public to make people interested in what you're doing.
Singers have gimmicks with dancers and wearing different clothes, and magicians do that.
Sadly, this bout between two inexperienced and untested ladies will go down in women's boxing history as the sport's biggest fight to date. And we may never see Christy Martin square off with Lucia Rijker, a legitimate bout that could be explosively dramatic even by men's standards. Ali is 9-0 with 8 KOs. As respectable as those records appear on the surface, a look at the opposition tells a more complete story. The combined record of Ali's first six opponents was 2-4.