The True Meaning Of Pound For Pound

I cant really speak too much about Sugar Ray Robinson on a fight/skill basis because I've only seen his last fight with Jake Lamotta, but he is given the distinction of The Best Fighter Pound for Pound. He won titles in the welterweight division and middleweight as well. So now when I think of "pound for pound" I think of boxers who have moved up the ranks and have been champs in more than one division. So all of this talk mainly about Dirrell and Ward need to cease until they prove their worth in another division or atleast Dominate 168 for a while. If anything Arthur Abraham needs to get more pound for pound recognition because of his impressive performances in the Super 6( he was gonna finish Dirrell b4 the DQ) , after being undefeated as a middleweight champ. So lets keep this in mind when we rate these fighters, a couple of victories in one weight class, whether over top notch comp or not, doesnt automatically mean pound for pound UNLESS those victories are over top Pound for Pound boxers.