In the history of the Church there were both minor and major orders. They are (in order)Tonsure, Porter, Lector, Exorcist, Acolyte, (<- minor) Sub-Deacon, Deacon, Priest (<-major).
Besides Tonsure, ALL of them were and are (the Ecclesia Dei communities still have them, i.e. the communities attached to the Extraordinary Form) considered o/Ordinations. This is where the confusion comes from when reading the papal bull because it does not specify. Many historians (I believe) believe that the Pope was speaking of the minor orders. Even today Priests (such as Abbots) are permitted in some communities to do some of the minor orders (such as the Wyoming Carmelite monks and Tonsure).
I don’t know the other article of confusion off hand. But please read what I have provided below.
The ordinary minister of the sacrament is the bishop, who alone has this power in virtue of his ordination. Holy Scripture attributed the power to the Apostles and their successors (Acts 6:6; 16:22; 1 Timothy 5:22; 2 Timothy 1:6; Titus 1:5), and the Fathers and councils ascribe the power to the bishop exclusively. First Council of Nicaea (Canon 4) and Apostolic Constitutions VIII.28 — “A bishop lays on hands, ordains. . .a presbyter lays on hands, but does not ordain.” A council held at Alexandria (340) declared the orders conferred by Caluthus, a presbyter, null and void (Athanas., “Apol. contra Arianos”, ii). For the custom said to have existed in the Church of Alexandria see EGYPT. Nor can objection be raised from the fact that chorepiscopi are known to have ordained priests, as there can be no doubt that some chorepiscopi were in bishops’ orders (Gillman, “Das Institut der Chorbischöfe im Orient,” Munich, 1903; Hefele-Leclercq, “Conciles”, II, 1197-1237). No one but a bishop can give any orders now without a delegation from the pope, but a simple priest may be thus authorized to confer minor orders and the subdiaconate. It is generally denied that priests can confer priests’ orders, and history, certainly, records no instance of the exercise of such extraordinary ministry. The diaconate cannot be conferred by a simple priest, according to the majority of theologians. This is sometimes questioned, as Innocent VIII is said to have granted the privilege to Cistercian abbots (1489), but the genuineness of the concession is very doubtful.
Again, I hope this helps.