Many things of the Old Testament changed in the New Testament, so it simply does not follow logically.
However, your premise is wrong too: the High Priest of Jerusalem temple was at the top of the sacredotal hierarchy. Papacy follows that model (as Pope Clement forcefully explains in his letter tot he Corinthians, where he compares himself to Aaron).
Had Pope Clement been a bit more familiar with scripture he would have understood that the priesthood of Aaron was an imperfect (and eventually corrupt) priesthood. The writer of Hebrews understood this where he compares Christ as our high priest after the order of Melchisedec-not Aaron. (Heb 4-5)
Clearly THE ROT set in early.
I've learned to run from folks who describe themselves in pontifical, lofty, super high, super anointed GOD POSITIONS.
I'd much rather wait for Holy Spirit to supernaturally confirm with signs following God's CURRENT AND ACTIVE anointing as well as observe the CURRENT AND ACTIVE humility in such folks before I put a microgram of trust in them.