On Constantinople replacing Old Rome

Balsamon, RP3, 146-150
Because it is frequently brought up - when it is necessary to submit the decision of Constantinople to appeal - it seemed necessary to me to add my opinion of this, and to give my reasons...the 4th canon of the Council of Sardica directs that the one who has been condemned has as security two appeals, and that the final judgement be by the pope of Rome...I say that since the decree of St. Constantine, the one given to St. Sylvester, and one which is covered by us in the interpretation of Chap. 1 of Title VIII of the present work, directs that the pope have all the royal powers, and that the Second Ecumenical Council and the Fourth gave the patriarch of Constantinople the privileges of the pope, and decrees with respect to this all honor, from necessity there is not appeal over his decision.

Balsamon, RP3, 242.
And, as we said in the preceding canons, that the matters defined with regard to the pope are not his privileges alone, so that all condemned bishops must from necessity go before the throne of Rome, but that this is understood in as certain sense as to Constantinople. These things we say yet again.

Angold, Byzantine Empire, p. 238, points out that Balsamon extended the papal analogy to his description of the administration of the Great Church. In his "Meditation on the Offices of Chartophylax and Protodicus", RP4, 534, Balsamon writes that the chartophylax
"was the patriarch's hand and mouth...for which reason the keys of the kingdom of heaven are given to the chartophylax".
Angold also points to a passage, RP1, 149, where Balsamon claims that the chartophylax is the patriarch's representative, hence a “patriarchal cardinal” and should enjoy the same privileges as a cardinal.