I was thinking today about world titles for example Calzaghe he won WBC,WBA,IBF and WBO at Super Middleweight but at Light heavyweight only won the Ring belt so if you look back in history books he will only be down as genuine world champ at Super Middle. The reason i was thinking about this was they say Pacquiao is going for his 7th world title at a 7th weight but Thing is if were talking Genuine World titles as in WBC,WBA,WBO and IBF this is actually what he has won

WBC Flyweight
IBF Super Bantamweight
WBC Super Featherweight
WBC Lightweight
WBO Welterweight

And his Wleterweight title was at a catchweight of 145lbs and his next at 150lbs now in my eyes if your not letting your opponent weigh the proper limits of 147lbs and 154lbs your not really fighting fully strong Welterweights and Light Middleweights.