Unlike boxing where we have so many weight divisions, sanctioning bodies and so many differant world champions I'm not sure how anyone can be bothered to keep up too date with it. I like boxing alot, but realistically a world title doesn't mean shit in the sport anymore, not in the fans eyes anyway.
This is pretty much what killed boxing for me. I still pay casual attention to it, I'm far from a dedicated follower. There are dozens of sanctioning bodies handing out championships across something like 17 divisions, often with only a few pounds of difference in between. It's ridiculous.