It is a an error. In the French version it is written :
"Possibilité de s’équiper de tous les objets violets obtenus, à condition qu'ils respectent les condition en jeu (niveau, classe, etc.)."
Which translates in :
"Able to equip all purple gear aquired, as long as they enforce the in-game requirements (level, class, etc.)."
End of that crisis I hope. I was getting worried myself there.
P.S. The German version proves this further.