I would suggest that you look at paragraph 1-35 of the Bull,
Apostolicae Curae, very carefully. Leo XIII outlines exactly the history behind the decree and the investigative steps that were taken in the formulation of that decree before making the pronouncement in paragraph 36:
Wherefore, strictly adhering, in this matter, to the decrees of the pontiffs, our predecessors, and confirming them most fully, and, as it were, renewing them by our authority, of our own initiative and certain knowledge, we pronounce and declare that ordinations carried out according to the Anglican rite have been, and are, absolutely null and utterly void.
The form and matter of the rite of ordination are clearly different (and thus, in the case of the Anglicans, void). That’s easy to research for yourself. This history can be looked up as well.