I've been watching boxing for many many years..since the late 70's and still do not understand how in the hell one body can have a guy ranked #1 yet another not even have the guy ranked. or how the belt holder in 2 bodies not be ranked by the third..Vlad is champ in wbc and ibf yet not even ranked in the wba where his bro vitali is the champ and andre ward is wba and wbc champ yet not ranked in ibf!!!! what the f*ck is wrong with this picture?
Well I think it is because they are different organizations. They don't rank every fighter that has stepped into the ring on a global scale, just the ones who fight for their organization. Since anyone can fight anyone does it really matter though? Like you I have been watching boxing for a long time and I also don't really get it or haven't taken the time to understand it. Just bring on the good boxing matches to distract me from how stupid this all seems and I will be ok.
For most sanctioning bodies the champion of one is not recognized by the others in their rankings, this allows them to push someone else to champion status. Some will not even recognize the other sanctioning body so a champion will have to vacate one title to fight for the other.