I don't follow Japan but why do they have 2 world titles?
Japanese wrestling has always made a distinction between heavyweights and junior heavyweights (much smaller wrestlers). Even though for the most successful promotions, the heavyweight division has always been the main attraction, with that belt being the World Title that's treated as the biggest price in the company.
Junior Heavyweights have had varying degrees of success and attention throughout the decades but their champion is always treated as "inferior" (for lack of a better term) than the heavyweight.
In the last 15 years there's been an effort from smaller promotions to be less strict about the division between both weights. With companies like Dragon Gate and DDT finding impressive success with more of an "openweight" approach, that's more similar to what we've seen in the U.S. for a long time.
