[MiddleEndian]

Having different champions for different rules (even if they're just time-based) makes sense, kind of like how in pro wrestling you had the regular champion, the hardcore champion, tag champions, and so on, or in the case of boxing and MMA, weight classes.

However, the different boxing championship organizations are not really distinguished by ruleset, as the ring size, glove size, and even the judges are negotiated on a bout-by-bout basis, and certain title shots are for multiple titles. It's really sort of nonsense.