It's a German rose, and Antike is the German word for Antique. Caramel Antike has been translated into English as Antique Caramel and is usually sold here under that name, but Romantic Antike hasn't been renamed in any English-speaking countries yet.
As for the roses grown for the cut-roses trade, you're right. Many of them are grown only in hothouses in South America and don't really do well anywhere else.
