“That is indeed a significant difference in understanding of the Liturgy and therefore priesthood.”
Maybe not so different after all. As the priest offering the sacrifice to God the priest is acting, at some removal, in the role of Christ as the High Priest. Remember that in Orthodoxy, the Liturgy is very, very much a Christianized Temple ceremony and so in that context the role of the priest is indeed somewhat different from the common perceptions in the Latin Church and yet if he is looked at as an Icon of Christ the Hogh Priest, not so different. And the invocation of the HS to effect the change in the bread and the wine is very consistent with Christ’s own promises about sending the HS, etc.
Huber...start a thread!
Oh, I very much agree that these eucharistic theologies are compatible, or else one of us would not have a valid Eucharist, but that explains why “alter Christus” is not the same as “icon of Christ” acting “in persona ecclesiae”.
Note that the liturgy ad orientem brings the two closer. Another instance where Vatican II innovations, despite the best intentions, drove the Churches further apart.