Well:Again,Ronde de Bordeaux,is not Violette de Bordeaux,nor is it Nero 600 M!.
These three figs are different cultivars,with different qualities,time of getting ripe,etc.
Ronde de Bordeaux,just happen to be originating from Bordeaux,region,just like Violette de Bordeaux.
That is all they have in common,nothing else.
Nero 600 M,seem to have been imported from Italy,by Planet fig owner,and that is why it is similar with Valle Negra,and is not a Bordeaux fig at all.