It is the only branch of Protestantism with Apostolic Succession. That worked for a while.
I would think these guys would be a little uncomfortable forsaking the national church of their country, however unsatisfactory.
If that were true then Anglican converts wanting to be Catholic Priests wouldn't have to receive the Sacrament of Holy Orders.
Actually Anglicanism lost its Apostolic Succession in the 16th century.
Mind you, some Scandinavian Lutherans (esp. the Swedes) insist they never lost Apostolic Succession.
http://dougstheology.blogspot.com/2009/09/apostolic-succession-in-sweden.html
IIRC, the Swedish Lutheran Church also retained Apostolic Succession.